Conjugate fortalecer in Spanish
to strengthen
fortalecer is an irregular -er verb ranked #2123 among the most common Spanish verbs. For example: "El ejercicio fortalece los músculos." (Exercise strengthens the muscles.). Use the tables below for full conjugation across all 7 tenses.
fortalecer — Spanish Conjugation Chart
to strengthen · -er verb · irregular (c>zc) · conjugado.com
Describes current actions, habits, and general truths. The most frequently used tense — master it first.
| Pronoun | Conjugation |
|---|---|
| yo | fortalezco * |
| tú | fortaleces |
| él/ella/Ud. | fortalece |
| nosotros | fortalecemos |
| vosotros | fortalecéis |
| ellos/ellas/Uds. | fortalecen |
El ejercicio fortalece los músculos.
Exercise strengthens the muscles.
Describes completed past actions with a clear start and end. Key signals: ayer, el lunes pasado, de repente.
| Pronoun | Conjugation |
|---|---|
| yo | fortalecí |
| tú | fortaleciste |
| él/ella/Ud. | fortaleció |
| nosotros | fortalecimos |
| vosotros | fortalecisteis |
| ellos/ellas/Uds. | fortalecieron |
Ayer yo fortalecí.
Yesterday I strengthen.
Describes habitual past actions, background context, and ongoing states. Key signals: siempre, normalmente, cuando era niño.
| Pronoun | Conjugation |
|---|---|
| yo | fortalecía |
| tú | fortalecías |
| él/ella/Ud. | fortalecía |
| nosotros | fortalecíamos |
| vosotros | fortalecíais |
| ellos/ellas/Uds. | fortalecían |
Antes yo fortalecía con frecuencia.
Before, I used to strengthen often.
Describes future events and predictions. In everyday speech, ir a + infinitive is often preferred for planned events.
| Pronoun | Conjugation |
|---|---|
| yo | fortaleceré |
| tú | fortalecerás |
| él/ella/Ud. | fortalecerá |
| nosotros | fortaleceremos |
| vosotros | fortaleceréis |
| ellos/ellas/Uds. | fortalecerán |
Mañana yo fortaleceré.
Tomorrow I will strengthen.
Expresses what would happen under certain conditions — equivalent to "would" in English. Also used for polite requests.
| Pronoun | Conjugation |
|---|---|
| yo | fortalecería |
| tú | fortalecerías |
| él/ella/Ud. | fortalecería |
| nosotros | fortaleceríamos |
| vosotros | fortaleceríais |
| ellos/ellas/Uds. | fortalecerían |
Si pudiera, yo fortalecería.
If I could, I would strengthen.
Used in clauses expressing wishes, doubt, emotion, or uncertainty — typically after que. Triggers: querer, esperar, dudar, ojalá.
| Pronoun | Conjugation |
|---|---|
| yo | fortalezca * |
| tú | fortalezcas * |
| él/ella/Ud. | fortalezca * |
| nosotros | fortalezcamos * |
| vosotros | fortalezcáis * |
| ellos/ellas/Uds. | fortalezcan * |
Espero que tú fortalezcas.
I hope that you strengthen.
Used to give commands and direct requests. Affirmative and negative forms differ significantly in Spanish.
| Pronoun | Conjugation |
|---|---|
| yo | - |
| tú | fortalece |
| él/ella/Ud. | fortalezca * |
| nosotros | fortalezcamos * |
| vosotros | fortaleced |
| ellos/ellas/Uds. | fortalezcan * |
El ejercicio fortalece los músculos.
Exercise strengthens the muscles.
Test yourself
Type the correct conjugation for each prompt.
Example sentences
-
El ejercicio fortalece los músculos.
Exercise strengthens the muscles.
-
Quiero fortalecer nuestra amistad.
I want to strengthen our friendship.
Common phrases with fortalecer
- fortalecer el sistema inmune to strengthen the immune system
- fortalecer lazos to strengthen ties