convertir Present Conjugation
convertir — to convert
Convertir follows an e > ie stem change in all present forms except nosotros and vosotros.
convertir Present Forms
When to Use the Present
Use the present tense when talking about ongoing transformations, such as converting currency or changing a file format. It is also common when describing how someone changes their opinion or status in the moment.
Notes on convertir in the Present
This is a stem-changing verb where the 'e' in the stem becomes 'ie' when stressed. The nosotros and vosotros forms stay regular.
Example Sentences
Yo convierto mis euros a dólares en el banco.
I convert my euros to dollars at the bank.
yo
Él siempre convierte sus ideas en realidad.
He always turns his ideas into reality.
él/ella/usted
Nosotros convertimos el garaje en una oficina.
We are converting the garage into an office.
nosotros
Common Mistakes
Mistake: conviertimos
Correct: convertimos
Why: Learners often apply the stem change to the 'nosotros' form, but -ir verbs only change in the 'boot' forms.
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Related Tenses
Preterite
yo: convertí
Convertir has a third-person stem change (e > i) in the preterite: convirtió and convirtieron.
Imperfect
yo: convertía
The imperfect of convertir is completely regular: convertía, convertías, convertía, etc.
Future
yo: convertiré
The future of convertir is regular: add endings to the infinitive (convertiré, convertirás).
Conditional
yo: convertiría
The conditional of convertir is regular: convertiría, convertirías, convertiría, convertiríamos.
Present Subjunctive
yo: convierta
The present subjunctive of convertir features e > ie changes, except nosotros/vosotros which use e > i.
Imperfect Subjunctive
yo: convirtiera
The imperfect subjunctive of convertir uses the 'i' stem in all forms: convirtiera, convirtieras.
Affirmative Imperative
yo: convierte
The imperative of convertir uses the 'ie' stem change for most commands (convierte, convierta).
Negative Imperative
yo: no conviertas
The negative imperative of convertir uses the present subjunctive forms: no conviertas, no convirtamos.