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How to conjugate calentar in Spanish

Calentar  in Spanish means to heat up, warm up

Calentar is an irregular verb. That means this verb doesn’t follow the traditional conjugation patterns in all verb tenses. It’s important to pay attention to the irregular tenses. 

Let’s learn how to conjugate the verb Calentar so you can use it comfortably in all tenses. 

Calentar in the Present Tense

The present tense is used to talk about actions or events happening now. 

The verb calentar is irregular in the present tense. 

Calentar in the present tense is not only an -ar verb but it is also a stem changing verb

Calentar is a Stem changing verb. Stem changers  have a change not only in the ending but also on the stem. In this case calentar is an e → ie stem changing verb. That means that the e in the stem changes to ie in all forms except for nosotros and vosotros. 

To review stem changing verbs e → ie watch my video: https://youtu.be/GDEzvOkyml8

To review stem changing verbs e →i watch my video: https://youtu.be/QJrPv-whYy8

To review stem changing verbs o → ue watch my video: https://youtu.be/LB3GJOqNAMw

The verb calentar is what we call an -ar verb. -ar verbs are verbs that end in -ar.  ar verbs are conjugated by following 2 major rules. 

  1. Take off the -ar
  2. Replace with a new ending depending on who performs the action. 

To review -ar verbs watch my -ar verbs video: 

ar, How to Conjugate ar verbs in Spanish

Just in case you need to review conjugation of -er and -ir verbs, Click for Page

Below you will find the conjugations of the verb calentar in the indicative present tense:

PronounSpanishEnglish
YocalientoI warm up 
calientasyou warm up 
Él / Ella / Usted (Ud.) calientahe/she warms up, you (formal) warm up 
Nosotros (as)calentamoswe warm up 
Vosotros (as)calentáisyou (plural) Spain warm up 
Ellas / Ellos / Ustedes (Uds.)calientanthey warm up , you (plural) warm up 

Examples: 

Yo caliento antes de empezar el partidoI warm up before starting the game
Nosotros calentamos en equipo para luego correrWe warm up as a team to run afterwards
Ellas calientan su comida en el microondasThey warm up their food in the microwave 

Calentar in the Preterite Tense

The verb calentar is regular in the preterite tense. 

The preterite is used to talk about actions that have already been completed. These actions have a clear beginning or ending. The preterite tense is often used with phrases that give a specific time frame.  More on the Preterite Tense Here

Things to remember: 

  1. The preterite is NOT used to describe actions or events that are repeated or continuous in the past. That means that those actions do not have a clear beginning or end. 
  2. The preterite is NOT used to describe people in the past.

Below you will find the conjugations of the verb calentar in the preterite tense:

PronounSpanishEnglish
YocalentéI warmed up 
calentasteyou warmed up  
Él / Ella / Usted (Ud.) calentóhe/she warmed up
Nosotros (as)calentamoswe warmed up 
Vosotros (as)calentasteisyou (plural) Spain warmed up
Ellas / Ellos / Ustedes (Uds.)calentaronthey warmed up

Below are some expressions that are often used when using the preterite:

la semana pasadalast week
el mes pasadolast month
el fin de semana pasadolast weekend
el año pasadolast year
ayer yesterday 
anteayerthe day before yesterday
anoche last night

Examples: 

Esta mañana calenté el café pero faltó más tiempoThis morning I warmed up the coffee but it needed more time
Anoche  nosotros calentamos la comida que estaba en la neveraLast night we warmed up the food that was in the fridge
Ellas calentaron  para el partido de baloncestoThey warmed up for their basketball game

Calentar in the Imperfect Tense

The imperfect is a form of past tense. It is primarily used to talk about continuous, repeated, usual or habitual actions in the past. It can also be used to talk about what someone or something was like in the past, what someone used to be or used to do. The imperfect is used when actions don’t have a specific beginning or end. 

The verb calentar is regular in the imperfect tense. 

The verb calentar is what we call an -ar verb. -ar verbs are verbs that end in -ar. Regular -ar verbs are conjugated by following 2 major rules. 

  1. Take off the -ar
  2. Replace with a new ending depending on who performs the action. 

To review how to conjugate -ar verbs in the imperfect watch my video: Click for Video 

To review how to conjugate -er and -ir verbs in the imperfect watch my video: Click for Video 

Below you will find the conjugations of the verb calentar in the imperfect tense:

PronounSpanishEnglish
YocalentabaI used to warm up
calentabasyou used to warm up
Él / Ella / Usted (Ud.) calentabahe/she used to warm up, you (formal) used to warm up
Nosotros (as)calentábamoswe used to warm up
Vosotros (as)calentabaisyou (plural) Spain used to warm up
Ellas / Ellos / Ustedes (Uds.)calentabanthey used to warm up, you (plural) used to warm up

Below are some expressions that are often used when using the Imperfect:

a menudooften
usualmenteusually
todos los díasevery day
todos los mesesevery month
todos los añosevery year
casi siemprealmost always
a vecessometimes
de niño/niñaas a child …
siempre always
normalmente normally

Examples: 

Yo calentaba media hora antes de hacer ejercicioI used to warm up half an hour before exercising
A menudo calentábamos corriendo antes del gymOften we used warm up running before the gym
Ellas calentaban su almuerzo al tiempo todos los díasThey used to warm up their lunch at the same time every day

Calentar in the Future Tense

The future is used to talk about an action or event that will happen in the future. 

The verb calentar is regular in the future tense. 

To form the future tense of regular -ar, -er and -ir verbs add the following endings to the verb in the infinitive (verbs that have not been conjugated and end in -ar, -er, -ir). The verb calentar is in its purest form (it has not been conjugated) it’s in the infinitive.  

The verb calentar is what we call an -ar verb. -ar verbs are verbs that end in -ar. To conjugate calentar in the future, follow these two rules: 

  1. Find the infinitive of the verb (verbs that have not been conjugated and end in -ar, -er, -ir). In this case calentar.
  2. Then attach the ending to the end of the infinitive. The ending depends on who is performing the action. 
Yoé
ás
Él / Ella / Usted (Ud.) á
Nosotros (as)emos
Vosotros (as)éis
Ellas / Ellos / Ustedes (Uds.)án

Below you will find the conjugations of the verb calentar using the future tense:

PronounSpanishEnglish
YocalentaréI will warm up
calentarásyou will warm up
Él / Ella / Usted (Ud.) calentaráhe/she will warm up, you (formal) will warm up
Nosotros (as)calentaremoswe will warm up
Vosotros (as)calentaréisyou (plural) Spain will warm up
Ellas / Ellos / Ustedes (Uds.)calentaránthey will warm up, you (plural) will warm up

Examples: 

Yo calentaré el aguaI will warm up the water
Nosotros calentaremos antes de empezar el gimnasio con una rutina de estiramientosWe will warm up before the gym with a stretching exercise
Hoy ellas calentarán el almuerzo tempranoThey will warm up their lunch early today

Calentar in the Informal Future Tense

The informal future is used to talk about an action or event that is going to take place in the near future. To form the informal future, you must use the correct form of the verb ir (to go) + a + the verb in the infinitive. 

The verb calentar is regular in the informal future tense. 

Follow this rule:

  1. Ir (conjugated) + a + infinitive (verb that ends in -ar, -er, -ir and has not been conjugated).  Example : Yo voy a calentar 

The conjugation of the verb ir (to go) in the present tense are:

Yovoy
vas
Él / Ella / Usted (Ud.) va
Nosotros (as)vamos
Vosotros (as)vais
Ellas / Ellos / Ustedes (Uds.)van

To review how to conjugate the informal future watch my video: Click for Video 

Below you will find the conjugations of the verb calentar using the informal future:

PronounSpanishEnglish
Yovoy a calentarI will warm up
vas a calentaryou will warm up
Él / Ella / Usted (Ud.) va a calentarhe/she will warm up, you (formal) will warm up
Nosotros (as)vamos a calentarwe will warm up
Vosotros (as)vais a calentaryou (plural) Spain will warm up
Ellas / Ellos / Ustedes (Uds.)van a calentar they will warm up, you (plural) will warm up

Examples: 

Yo voy a calentar mi cena rápido will warmI up my dinner quickly
Nosotros vamos a calentar nuestros almuerzos al tiempoWe will warm up our lunch at the same time
Ellas van a calentar la comidaThey will warm up their food

Calentar in the Present Progressive Tense.

The present progressive is used to talk about actions or events happening now. In other words, we use the present progressive to talk about actions that are in the process of happening at the current moment. 

The verb calentar is regular in the present progressive tense. 

The present progressive is formed by using the correct form of the verb estar (to be) plus the present participle (-ing form of a verb). 

To form the present participle of a verb:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)
  2. Remove the ending (-ar, -er, -ir).
  3. Add -ando for -ar verbs
  4. Add -iendo for -er and –ir verbs

Let’s apply it to calentar:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)  = (calentar)
  2. Remove the ending (-ar, -er, -ir) = (calent)
  3. Add -ando for -ar verbs  = (calentando)

The present participle of calentar is calentando

The conjugations of the verb estar in the present tense are:

Yoestoy
estás
Él / Ella / Usted (Ud.) está
Nosotros (as)estamos
Vosotros (as)estáis
Ellas / Ellos / Ustedes (Uds.)están

The present participle of the verb calentar is: calentando

To review the present progressive and present participles in Spanish, watch my Present Progressive Video:Click for Video 

Just in case you need to review the verb estar, watch my Estar video: Click for Video 

Below you will find the conjugations of the verb calentar using the present progressive:

PronounSpanishEnglish
Yoestoy calentandoI am warming up
estás calentandoyou are warming up
Él / Ella / Usted (Ud.) está calentandohe/she is warming up, you (formal) are warming up
Nosotros (as)estamos calentandowe are warming up
Vosotros (as)estáis calentandoyou (plural) Spain are warming up
Ellas / Ellos / Ustedes (Uds.)están calentandothey are warming up, you (plural) are warming up

Examples:

Yo estoy calentando para el partidoI am warming up for the game
Estamos calentando los músculos We are warming up their muscles
¿Están calentando la comida?Are you warming up the food?

Calentar in the Conditional Tense

The conditional tense is used to talk about actions or events that may happen in the future. Think of it as a possibility, a hypothesis, a probability. 

The verb calentar is regular in the conditional tense. 

The verb calentar is what we call an -ar verb. -ar verbs are verbs that end in -ar. To conjugate calentar in the conditional tense follow these two rules: 

  1. Find the infinitive of the verb (verbs that have not been conjugated and end in -ar, -er, -ir). In this case calentar.
  2. Then attach the ending to the end of the infinitive. The ending depends on who is performing the action. 

To form the conditional of a verb add the following endings to the infinitive of the verb: 

Yoía
ías
Él / Ella / Usted (Ud.) ía
Nosotros (as)íamos
Vosotros (as)íais
Ellas / Ellos / Ustedes (Uds.)ían

The infinitive of the verb calentar is calentar

Below you will find the conjugations of the verb calentar using the conditional tense:

PronounSpanishEnglish
YocalentaríaI would warm up
calentaríasyou would warm up
Él / Ella / Usted (Ud.) calentaríahe/she would warm up, you (formal) would warm up
Nosotros (as)calentaríamoswe would warm up
Vosotros (as)calentaríaisyou (plural) Spain would warm up
Ellas / Ellos / Ustedes (Uds.)calentaríanthey would warm up, you (plural)  would warm up

Examples: 

Yo calentaría la comida en el microondas pero no hay luzI would warm up the food in the microwave but the power went out
Nosotros calentaríamos el café pero se daño el microondasWe would warm up the coffee but the microwave it’s broken
Ellas calentarían el almuerzo pero prefieren ir a comprarThey would warm up the lunch but they ratter buy something

Calentar in the Present Perfect Tense

The present perfect is used to talk about actions or events that have started recently (in the past) and are still happening. It can also be used to talk about things that have been done recently or to describe experiences a person has had in their lives. 

The verb calentar is regular in the Present Perfect tense. 

To form the present perfect, you must use the helping verb “haber” in the present tense. This will let us know who has performed the action. Then, we add the past participle of the verb. 

The conjugations of haber in the present tense are:

Yohe
has
Él / Ella / Usted (Ud.) ha
Nosotros (as)hemos
Vosotros (as)habéis
Ellas / Ellos / Ustedes (Uds.)han

To form the past participle of a verb:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)
  2. Remove the ending (-ar, -er, -ir).
  3. Add -ado for -ar verbs
  4. Add -ido for -er and –ir verbs

Let’s apply it to calentar:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)  = (calentar)
  2. Remove the ending (-ar, -er, -ir) = (calent)
  3. Add -ado for -ar verbs  = (calentado)

The past participle of the verb calentar is calentado.

To summarize. Correct form of haber in the present + past participle = present perfect. 

Below you will find the conjugations of the verb calentar in the present perfect:

PronounSpanishEnglish
Yohe calentadoI have warm up
has calentadoyou have warm up
Él / Ella / Usted (Ud.) ha calentadohe/she have warm up, you (formal) have warm up
Nosotros (as)hemos calentadowe have warm up
Vosotros (as)habéis calentadoyou (plural) Spain have warm up
Ellas / Ellos / Ustedes (Uds.)han calentadothey have warm up, you (plural) have warm up

Examples: 

Siempre que quiero hacer ejercicio  he calentado antes de empezarEverytime I want to exercise I have warm up before starting
Nosotros hemos calentado juntas desde que entramos al equipoWe have warmed up together since we join the team

Calentar in the Past Perfect Tense (Pretérito Pluscuamperfecto) 

The past perfect is used to talk about actions or events that happened before. It is widely used to describe a series of events and it comes in handy to tell stories. 

The verb calentar is regular in the past perfect tense. 

To form the past perfect you must use the verb haber in the imperfect. This will let us know who has performed the action. 

The conjugations of haber in the imperfect tense are:

Yohabía
habías
Él / Ella / Usted (Ud.) había
Nosotros (as)habíamos
Vosotros (as)habíais
Ellas / Ellos / Ustedes (Uds.)habían

Then, we add the past participle of the verb. In this case calentar

To form the past participle of a verb:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)
  2. Remove the ending (-ar, -er, -ir).
  3. Add -ado for -ar verbs
  4. Add -ido for -er and –ir verbs

Let’s apply it to calentar:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)  = (calentar)
  2.  Remove the ending (-ar, -er, -ir) = (calent)
  3. Add -ado for -ar verbs  = (calentado)

The past participle of calentar is calentado

To summarize. Use the correct form of haber in the imperfect + past participle = past perfect. 

Below you will find the conjugations of the verb calentar in the past perfect:

PronounSpanishEnglish
Yohabía calentadoI had warmed up
habías calentadoyou had warmed up 
Él / Ella / Usted (Ud.) había calentadohe/she had warmed up, you (formal) had warmed up
Nosotros (as)habíamos calentadowe had warmed up
Vosotros (as)habíais calentadoyou (plural) Spain had warmed up
Ellas / Ellos / Ustedes (Uds.)habían calentadothey had warmed up, you (plural) had warmed up

Examples: 

Yo había calentado mi almuerzo y ya se enfrióI had warmed up my lunch and it’s already cold
¿Tú habías calentado el almuerzo de los niños?Had you warmed up the kids’ lunch?
Él ya había calentado su hamburguesa He had already warmed up his hamburger

Calentar in the Future Perfect Tense

The future perfect is used to talk about something that hasn’t happened yet but is predicted to take place. It is used to describe what will have happened in the future.

The verb calentar is regular in the future perfect tense. 

To form the future perfect you must use the verb haber in the simple future tense. This will let us know who has performed the action. 

The conjugations of haber in the future tense are:

Yohabré
habrás
Él / Ella / Usted (Ud.) habrá
Nosotros (as)habremos
Vosotros (as)habréis
Ellas / Ellos / Ustedes (Uds.)habrán

Then, we add the past participle of the verb. In this case calentar. To form the past participle, you simply add the appropriate ending to the stem of the verb. 

To form the past participle of a verb:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)
  2. Remove the ending (-ar, -er, -ir).
  3. Add -ado for -ar verbs
  4. Add -ido for -er and –ir verbs

Let’s apply it to calentar:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)  = (calentar)
  2. Remove the ending (-ar, -er, -ir) = (calent)
  3. Add -ado for -ar verbs  = (calentado)

The past participle of calentar is calentado

To summarize. Correct form of haber in the simple future tense + past participle = future perfect. 

Below you will find the conjugations of the verb calentar in the future perfect:

PronounSpanishEnglish
Yohabré calentadoI will have warmed up
habrás calentadoyou will have warmed up
Él / Ella / Usted (Ud.) habrá calentadohe/she will have warmed up, you (formal) will have warmed up
Nosotros (as)habremos calentadowe will have warmed up
Vosotros (as)habréis calentadoyou (plural) Spain will have warmed up
Ellas / Ellos / Ustedes (Uds.)habrán calentadothey will have warmed up, you (plural) will have warmed up

Examples: 

¿Crees que ellos habrán calentado su café?Do you think they have warmed up their coffee?
Pedro habrá calentado la pizza que deje en la neveraPedro will have warmed up the pizza I left in the fridge

Calentar in the Conditional Perfect Tense

The conditional perfect is used to talk about an action or event that would have happened in the past but didn’t take place due to another action happening. It is used to express possibility in the past. Basically think of it as actions that could or would have taken place if … 

The verb calentar is regular in the conditional perfect tense. 

To form the conditional perfect you must use the verb haber in the conditional. This will let us know who has performed the action.

The conjugations of haber in the conditional tense are:

Yohabría
habrías
Él / Ella / Usted (Ud.) habría
Nosotros (as)habríamos
Vosotros (as)habríais
Ellas / Ellos / Ustedes (Uds.)habrían

 Then, we add the past participle of the verb. In this case calentar. To form the past participle, you simply add the appropriate ending to the stem of the verb. 

To form the past participle of a verb:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)
  2. Remove the ending (-ar, -er, -ir).
  3. Add -ado for -ar verbs
  4. Add -ido for -er and –ir verbs

Let’s apply it to calentar:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)  = (calentar)
  2. Remove the ending (-ar, -er, -ir) = (calent)
  3. Add -ado for -ar verbs  = (calentado)

The past participle of calentar is calentado

Below you will find the conjugations of the verb calentar in the future perfect:

PronounSpanishEnglish
Yohabría calentadoI would have warmed up
habrías calentadoyou would have warmed up
Él / Ella / Usted (Ud.) habría calentadohe/she would have warmed up (formal) would have  warmed up
Nosotros (as)habríamos calentadowe would have warmed up
Vosotros (as)habríais calentadoyou (plural) Spain would have warmed up
Ellas / Ellos / Ustedes (Uds.)habrían calentadothey would have warmed up, you (plural) would have warmed up

Examples: 

Yo  habría calentado pero llegue tarde y me tocó entrar directo al partidoI would have warmed up but I got here late and I had to go straight into the game
Ellos habrían calentado su café pero no les importa tomarlo fríoThey would have warmed up their coffee but they dont mind have it cold

Calentar in the Subjunctive Present Tense

The Subjunctive present is used to talk about situations of uncertainty. For example emotions such as wishes, desires and hopes. The main difference between the subjunctive and the indicative mode is that the subjunctive is uncertain, hypothetical or not real. 

The verb calentar is irregular in the subjunctive present form. 

Calentar is a Stem changing verb. Stem changers have a change not only in the ending but also on the stem. In this case calentar is an e → ie stem changing verb. That means that the e in the stem changes to ie in all forms except for nosotros and vosotros. 

To review stem changing verbs o → ue watch my video: https://youtu.be/LB3GJOqNAMw

To review stem changing verbs e → ie watch my video: https://youtu.be/GDEzvOkyml8 

To review stem changing verbs e →i watch my video: https://youtu.be/QJrPv-whYy8 

To form the subjunctive present of most verbs, you must take off the -o endings of the yo form of the present simple and then add a new ending based on who is performing the action.

Subjunctive present endings for -ar:

Yoe
es
Él / Ella / Usted (Ud.) e
Nosotros (as)emos
Vosotros (as)éis
Ellas / Ellos / Ustedes (Uds.)en

Subjunctive present endings for -er and -ir verbs: 

Yoa
as
Él / Ella / Usted (Ud.) as
Nosotros (as)amos
Vosotros (as)áis
Ellas / Ellos / Ustedes (Uds.)an

Keep in mind that the verb calentar is irregular in the subjunctive present and it is  a stem changing verb. The e in the stem changes to ie in all forms except for nosotros and vosotros 

Below you will find the conjugations of the verb calentar in the subjunctive present:

PronounSpanishEnglish
YocalienteI may warm up
calientesyou may warm up
Él / Ella / Usted (Ud.) calientehe/she may warm up, you (formal) may warm up
Nosotros (as)calentemoswe may warm up
Vosotros (as)calentéisyou (plural) Spain may warm up
Ellas / Ellos / Ustedes (Uds.)caliententhey may warm up, you (plural) may warm up

Examples: 

Quizás caliente el café en el microondasPerhaps, I may warm up the coffee in the microwave 
Es posible que ellos calienten antes del partidoIt’s possible they may warm up before the game

Calentar in the Subjunctive Imperfect Tense

The subjunctive imperfect is used to talk about situations of uncertainty in the past. For example emotions such as wishes, desires and hopes in the past. It is also used to express politeness or deference, primarily when making a request. 

The verb calentar is regular in the subjunctive imperfect tense. 

To form the subjunctive imperfect find the ellos/ellas form of the verb in the preterite, take off -aron or -ieron and add a new ending. 

Subjunctive Imperfect endings for -ar verbs like calentar the endings are:

Yoara
aras
Él / Ella / Usted (Ud.) ara
Nosotros (as)áramos
Vosotros (as)arais
Ellas / Ellos / Ustedes (Uds.)aran

You can also use the endings below as alternative endings and the meaning doesn’t change. Keep in mind the ones above are more common

Yoase
ases
Él / Ella / Usted (Ud.) ase
Nosotros (as)ásemos
Vosotros (as)aseis
Ellas / Ellos / Ustedes (Uds.)asen

Subjunctive Imperfect endings for -er & -ir verbs like he endings are:

Yoiera
ieras
Él / Ella / Usted (Ud.) iera
Nosotros (as)iéramos
Vosotros (as)ierais
Ellas / Ellos / Ustedes (Uds.)ieran

You can also use the endings below as alternative endings and the meaning doesn’t change. Keep in mind the ones above are more common:

Yoiese
ieses
Él / Ella / Usted (Ud.) iese
Nosotros (as)iésemos
Vosotros (as)ieseis
Ellas / Ellos / Ustedes (Uds.)iesen

Here are the steps in action:

  1. Calentar
  1. The third person of the preterite (ellos/ellas) would be: calentar – calentaron
  1. Now remove -aron and you are left with calent
  1. Then, add a new ending.

Below you will find the conjugations of the verb calentar in the subjunctive imperfect:

PronounSpanishEnglish
YocalentaraI might warm up
calentarasyou might warm up
Él / Ella / Usted (Ud.) calentarahe/she might warm up, you (formal) might warm up
Nosotros (as)calentáramos we might warm up
Vosotros (as)calentaraisyou (plural) Spain might warm up
Ellas / Ellos / Ustedes (Uds.)calentaranthey might warm up, you (plural) might warm up

OR

PronounSpanishEnglish
YocalentaseI might warm up
calentasesyou might warm up
Él / Ella / Usted (Ud.) calentasehe/she might warm up, you (formal) might warm up
Nosotros (as)calentásemoswe might warm up
Vosotros (as)calentaseisyou (plural) Spain might warm up
Ellas / Ellos / Ustedes (Uds.)calentasenthey might warm up, you (plural) might warm up

Examples: 

Te dije que calentases  la comida y no me esperesI told you to warm up the food and to not wait for me 
Sería bueno si calentásemos el almuerzo rápidoIt would be nice if we warm up the lunch quickly

Calentar in the Subjunctive Future Tense

The subjunctive future is used to describe an event or action or a possible or hypothetical situation. It can also be used to describe something you wished or hoped would happen in the future. This tense is rarely used in Spanish but it doesn’t hurt to learn it.

The verb calentar is regular in the subjunctive future tense. 

To form the future subjunctive simply add the following endings to the verb in the infinitive (the most pure form of the verb. Verbs in the infinitive have not been conjugated (they end in -ar, -er & -ir)).

Subjunctive Future endings for -ar verbs like calentar  the endings are:

Yoe
es
Él / Ella / Usted (Ud.) e
Nosotros (as)emos (accent on á of the stem)
Vosotros (as)eis
Ellas / Ellos / Ustedes (Uds.)en

Subjunctive Future endings for -er verbs the endings are:

Yoiere
ieres
Él / Ella / Usted (Ud.) iere
Nosotros (as)iéremos
Vosotros (as)iereis
Ellas / Ellos / Ustedes (Uds.)ieran

Subjunctive Future endings for -ir verbs the endings are:

Yoiere
ieres
Él / Ella / Usted (Ud.) iere
Nosotros (as)iéremos
Vosotros (as)iereis
Ellas / Ellos / Ustedes (Uds.)ieren

Below you will find the conjugations of the verb calentar in the subjunctive future:

PronounSpanishEnglish
YocalentareI will warm up
calentaresyou will warm up
Él / Ella / Usted (Ud.) calentarehe/she will warm up, you (formal) will warm up
Nosotros (as)calentáremoswe will warm up
Vosotros (as)calentareisyou (plural) Spain will warm up
Ellas / Ellos / Ustedes (Uds.)calentarenthey will warm up, you (plural) will warm up

Example:

El día que yo calentare antes de empezar el ejercicio del gimnasio al otro día me dolerá menos las piernasThe day I will warm up before I start with the gym exercise the next day it will hurt much less

Calentar in the Subjunctive Present Perfect Tense

The subjunctive present perfect is used to describe actions that are connected to the present. It is also used to talk about actions that will have happened by a certain time in the future. 

The verb calentar is regular in the subjunctive present perfect tense. 

To form the subjunctive present perfect you must use the present subjunctive of the verb haber  + the past participle of the verb

Here are the conjugations of the verb haber in the present subjunctive:

Yohaya
hayas
Él / Ella / Usted (Ud.) haya
Nosotros (as)hayamos
Vosotros (as)hayáis
Ellas / Ellos / Ustedes (Uds.)hayan

The past participle of the verb calentar is: calentado

Now, let’s put it together . Here are the conjugations of the verb calentar in the subjunctive present perfect. 

PronounSpanishEnglish
Yohaya calentadoI may have warmed up
hayas calentadoyou may have warmed up
Él / Ella / Usted (Ud.) haya calentadohe/she may have warmed up, you (formal) may have warmed up
Nosotros (as)hayamos calentadowe may have warmed up
Vosotros (as)hayáis calentadoyou (plural) Spain may have warmed up
Ellas / Ellos / Ustedes (Uds.)hayan calentadothey may have warmed up, you (plural) may have warmed up

Example:

¿Tú crees que ellos hayan calentado antes del partido?Do you think they may have warmed up before the game?
Es posible que hayan calentado la comida que estaba guardada en la neveraIt’s possible they may have warmed up the food that was stored in the fridge

Calentar in the Subjunctive Past Perfect Tense (Pluscuamperfecto del Subjuntivo)

The verb calentar is regular in the subjunctive past perfect tense. 

The subjunctive past perfect is used to talk about hypothetical situations or actions in the past. It can also be used to talk about past actions that preceded other past actions. 

To form the subjunctive past perfect you must use the imperfect subjunctive of the verb haber  + the past participle of the verb

The imperfect subjunctive of haber can be conjugated in two different ways. Having said that, the first conjugations are more commonly used. 

Here are the conjugations of the verb haber in the imperfect subjunctive of the verb haber:

Yohubiera
hubieras
Él / Ella / Usted (Ud.) hubiera
Nosotros (as)hubiéramos
Vosotros (as)hubierais
Ellas / Ellos / Ustedes (Uds.)hubieran

The other conjugations of haber in the imperfect subjunctive are:

Yohubiese
hubieses
Él / Ella / Usted (Ud.) hubiese
Nosotros (as)hubiésemos
Vosotros (as)hubieseis
Ellas / Ellos / Ustedes (Uds.)hubiesen

To form the past participle of a verb:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)
  2. Remove the ending (-ar, -er, -ir).
  3. Add -ado for -ar verbs
  4. Add -ido for -er and –ir verbs

Let’s apply it to calentar:

  1. Find the verb in the infinitive (verb that ends in -ar, -er, -ir)  = (calentar)
  2. Remove the ending (-ar, -er, -ir) = (calent)
  3. Add -ado for -ar verbs  = (calentado)

The past participle of the verb calentar is calentado.

Now, let’s put it together . Here are the conjugations of the verb calentar in the subjunctive past perfect. 

PronounSpanishEnglish
Yohubiese calentado I might have warmed up
hubieses calentadoyou might have warmed up
Él / Ella / Usted (Ud.) hubiese calentadohe/she might have warmed up, you (formal) might have warmed up
Nosotros (as)hubiésemos calentadowe might have warmed up
Vosotros (as)hubieseis calentadoyou (plural) Spain might have warmed up
Ellas / Ellos / Ustedes (Uds.)hubiesen calentadothey might have warmed up, you (plural) might have warmed up

OR

PronounSpanishEnglish
Yohubiera calentadoI might have warmed up
hubieras calentadoyou might have warmed up
Él / Ella / Usted (Ud.) hubiera calentadohe/she might have warmed up, you (formal) might have warmed up
Nosotros (as)hubiéramos calentadowe might have warmed up
Vosotros (as)hubierais calentadoyou (plural) Spain might have warmed up
Ellas / Ellos / Ustedes (Uds.)hubieran calentadothey might have warmed up, you (plural) might have warmed up

Example:

Yo  hubiese calentado mi almuerzo pero el microondas no sirveI might have warmed up my lunch but the microwave its not working
Desearía que hubiéramos calentado antes del partido porque me duelen las piernasI wish we might have warmed up before the game because my legs are sore

Calentar as an Imperative Affirmative Command

The imperative Affirmative commands are used to tell someone or a group of people what to do. We do not give commands in the 1st or 3rd person which is why yo, él, ella, ellos, and ellas have been removed for this tense.

Calentar is irregular when forming Imperative Affirmative Commands. 

Mostly we will give commands or tell someone we treat as (tú) what to do. Let’s learn how to conjugate that part first. 

To find the Affirmative Informal tú command of a verb follow these steps:

  1. Find the form of the verb in the present tense. 
  2. Take off the “s
  3. That will give you the affirmative informal command of a verb in the tú form. 

Reminders: Stem changing verbs should continue to have the change in the stem.

For example, The affirmative informal tú command of the verb calentar  would be calienta

Let’s see the process:

  1. Find the tú form of the verb in the present tense.  (calientas)
  2. Take off the “s”.  (calienta)
  3. That will give you the affirmative informal command of a verb in the tú form.  (calienta)

To review how to use Affirmative informal (tú) commands watch my video: Click for Video 

Keep in mind that  calentar is a Stem changing verb. Stem changers have a change not only in the ending but also on the stem. In this case calentar is an e → ie stem changing verb. That means that the e in the stem changes to ie in all forms except for nosotros and vosotros. 

To review stem changing verbs o → ue watch my video: https://youtu.be/LB3GJOqNAMw

To review stem changing verbs e → ie watch my video: https://youtu.be/GDEzvOkyml8 

To review stem changing verbs e →i watch my video: https://youtu.be/QJrPv-whYy8 

The rest of the conjugations in the Affirmative Commands for the verb calentar are the following:

PronounSpanishEnglish
N/AN/AN/A
¡calienta! warm up! 
Usted (Ud.) ¡caliente!warm up! 
Nosotros (as)¡calentamos!warm up! 
Vosotros (as)¡calentad!warm up! 
Ustedes (Uds.)¡calienten!warm up! 

Examples:

¡Calienta la comida! Warm up the food!
¡Calienten sus músculos!Warm up your muscles!

Calentar as an Imperative Negative Command

The imperative Negative commands are used to tell someone or a group of people what NOT to do. We do not give commands in the 1st or 3rd person which is why yo, él, ella, ellos, and ellas have been removed for this tense.

Calentar  is irregular when forming Imperative Negative Commands. 

Mostly we will give commands or tell someone we treat as (tú) what to do. Let’s learn how to conjugate that part first. 

To find the Negative Informal tú command of a regular verb follow these steps:

  1. Start with No
  2. Find the yo form of the verb in the present tense. 
  3. Take off the “o
  4. Add -es if it’s an -ar verb or -as if it’s and -er or -ir verb.

To review how to use Negative informal (tú) commands watch my video: Click for Video 

The rest of the conjugations in the Negative Commands for the verb calentar are the following but please keep in mind that  calentar is a Stem changing verb. Stem changers have a change not only in the ending but also on the stem. In this case calentar is an e → ie stem changing verb. That means that the e in the stem changes to ie in all forms except for nosotros and vosotros. 

To review stem changing verbs o → ue watch my video: https://youtu.be/LB3GJOqNAMw

To review stem changing verbs e → ie watch my video: https://youtu.be/GDEzvOkyml8 

To review stem changing verbs e →i watch my video: https://youtu.be/QJrPv-whYy8 

PronounSpanishEnglish
N/AN/AN/A
¡No calientes!Don’t warm up!
Usted (Ud.) ¡No caliente!Don’t warm up!
Nosotros (as)¡No calentemos!Don’t warm up!
Vosotros (as)¡No calentéis!Don’t warm up!
Ustedes (Uds.)¡No calienten!Don’t warm up!

Examples

¡No calienten el agua! Don’t warm up the water!