Duplicar Present Tense Conjugation in Spanish

The present tense of duplicar — "to duplicate" in English — is the form you need for what happens now, for habits and for general truths. This page gives you the full present conjugation table for duplicar with all six persons, explains exactly how the tense is formed for this verb, shows when to use it with real examples, and finishes with a quiz so you can test yourself. Duplicar means to duplicate, and it covers duplicating a key, a document and a recipe, and doubling sales in two years. It is a spelling-change verb: the c becomes qu before e. To see it in a real sentence: Él duplica la llave en la cerrajería. — "He/she duplicates the key at the locksmith's." Work through the table below, then the formation notes, the usage rules and the contrast with the preterite, and test yourself at the end.

Present tense conjugation table: duplicar

Every person of duplicar in the present tense. The gerund is duplicando and the past participle is duplicado.

Present indicative

Person Form
yo duplico
tú duplicas
él/ella/Ud. duplica
nosotros/as duplicamos
vosotros/as duplicáis
ellos/ellas/Uds. duplican

How the present indicative of duplicar is formed

The present indicative of duplicar is built from the stem duplic- plus the present endings for -ar verbs. Take the infinitive, drop the -ar ending, and add the ending that matches the person. The table below shows the endings, and the full table above shows them attached to the stem.

Person Ending Form
yo -o duplico
tú -as duplicas
él/ella/Ud. -a duplica
nosotros/as -amos duplicamos
vosotros/as -áis duplicáis
ellos/ellas/Uds. -an duplican

duplicar is a spelling-change verb: c becomes qu before e. That is why the written form changes in some persons — the sound stays the same, and only the spelling adapts. In this tense, watch the first-person form duplico in particular.

The gerund of duplicar is duplicando and the past participle is duplicado. Both are regular for this verb, and the participle is the form you need for all the perfect tenses with haber.

When to use the present tense of duplicar

The present tense is not one single use — it covers several situations, and duplicar appears in all of them. The five uses below are the ones you will meet most often, each with an example that shows the verb in a natural sentence.

Habits and routines

The present tense describes things you do regularly. If you do it every day, every week or every morning, the present is the tense to use. For duplicar, this use looks like this: "Yo duplico la llave en la cerrajería." — "I duplicate the key at the locksmith's." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

General facts

The present tense states facts that are generally true, not tied to one moment. It is the tense for definitions and permanent situations. For duplicar, this use looks like this: "Él duplica el documento para el archivo." — "He/she duplicates the document for the file." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

What is happening now

The present tense also covers what is happening at this moment, especially with verbs that describe an action in progress. For duplicar, this use looks like this: "Nosotros duplicamos la receta de la abuela." — "We duplicate grandmother's recipe." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

Timetables and schedules

The present tense is used for fixed plans and timetables, such as trains, classes and opening times, even when they refer to the future. For duplicar, this use looks like this: "Ellos duplican las ventas en dos años." — "They duplicate the sales in two years." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

Instructions and requests

The present tense appears in instructions and polite requests, where it sounds softer than a direct command. For duplicar, this use looks like this: "Tú duplicas la llave en la cerrajería." — "You duplicate the key at the locksmith's." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

The present tense vs the preterite

Learners often mix up the present and the preterite with duplicar. The rule is simple: the present is for habits, facts and what is happening now, while the preterite is for one finished action in the past. The three pairs below show the same idea in both tenses, so you can feel the difference.

Pair 1: present vs preterite

  • Present: "Yo duplico la llave en la cerrajería." — "I duplicate the key at the locksmith's."
  • Preterite: "Yo dupliqué la llave en la cerrajería." — "I duplicated the key at the locksmith's." The first sentence uses the present because it describes a habit or a present fact; the second uses the preterite because it describes a finished action. The verb is the same — only the tense changes the meaning.

Pair 2: present vs preterite

  • Present: "Él duplica el documento para el archivo." — "He/she duplicates the document for the file."
  • Preterite: "Él duplicó el documento para el archivo." — "He/she duplicated the document for the file." The first sentence uses the present because it describes a habit or a present fact; the second uses the preterite because it describes a finished action. The verb is the same — only the tense changes the meaning.

Pair 3: present vs preterite

  • Present: "Nosotros duplicamos la receta de la abuela." — "We duplicate grandmother's recipe."
  • Preterite: "Nosotros duplicamos la receta de la abuela." — "We duplicated grandmother's recipe." The first sentence uses the present because it describes a habit or a present fact; the second uses the preterite because it describes a finished action. The verb is the same — only the tense changes the meaning.

Example sentences in the present tense

Eight natural sentences with duplicar in the present tense only. Each one uses a form from the table above.

  1. Yo duplico la llave en la cerrajería. — I duplicate the key at the locksmith's.
  2. Tú duplicas el documento para el archivo. — You duplicate the document for the file.
  3. Él duplica la receta de la abuela. — He/she duplicates grandmother's recipe.
  4. Nosotros duplicamos las ventas en dos años. — We duplicate the sales in two years.
  5. Vosotros duplicáis la llave en la cerrajería. — You all duplicate the key at the locksmith's.
  6. Ellos duplican el documento para el archivo. — They duplicate the document for the file.
  7. Yo duplico la receta de la abuela. — I duplicate grandmother's recipe.
  8. Él duplica las ventas en dos años. — He/she duplicates the sales in two years.

Common mistakes

  1. Wrong: Vosotros duplicais el documento para el archivo. — Right: Vosotros duplicáis el documento para el archivo. — The vosotros present form carries a written accent: duplicáis, not duplicais.
  2. Wrong: Ayer, yo duplico la receta de la abuela. — Right: Ayer, yo dupliqué la receta de la abuela. — Ayer means yesterday, so it needs the preterite (dupliqué), not the present (duplico). The present is for now, not for yesterday.
  3. Wrong: Yo duplica la llave en la cerrajería. — Right: Yo duplico la llave en la cerrajería. — The person matters: duplica is the él/ella/Ud. form, while the yo form is duplico.
  4. Wrong: Yo soy duplicado el documento para el archivo. — Right: Yo he duplicado el documento para el archivo. — Spanish perfect tenses use haber, not ser: he duplicado. Ser plus the participle makes a passive, not a perfect tense.

Quiz: test yourself

Eight questions on the present tense of duplicar. Choose the right form, then check the answer key below.

  1. Complete the sentence: Yo ___ la llave en la cerrajería. (present tense) A. duplico B. duplicas C. duplica D. duplicamos

  2. Complete the sentence: Tú ___ el documento para el archivo. (present tense) A. duplicas B. duplico C. duplica D. duplicamos

  3. Complete the sentence: Él ___ la receta de la abuela. (present tense) A. duplica B. duplico C. duplicas D. duplicamos

  4. Complete the sentence: Nosotros ___ las ventas en dos años. (present tense) A. duplicamos B. duplico C. duplicas D. duplica

  5. Complete the sentence: Vosotros ___ la llave en la cerrajería. (present tense) A. duplicáis B. duplico C. duplicas D. duplica

  6. Complete the sentence: Ellos ___ el documento para el archivo. (present tense) A. duplican B. duplico C. duplicas D. duplica

  7. Complete the sentence: Yo ___ la receta de la abuela. (present tense) A. duplico B. duplicas C. duplica D. duplicamos

  8. Complete the sentence: Él ___ las ventas en dos años. (present tense) A. duplica B. duplico C. duplicas D. duplicamos

Answer key

  1. duplico — The yo present form of duplicar is duplico. The other options are the other persons of the same tense.
  2. duplicas — The tu present form of duplicar is duplicas. The other options are the other persons of the same tense.
  3. duplica — The el present form of duplicar is duplica. The other options are the other persons of the same tense.
  4. duplicamos — The nosotros present form of duplicar is duplicamos. The other options are the other persons of the same tense.
  5. duplicáis — The vosotros present form of duplicar is duplicáis. The other options are the other persons of the same tense.
  6. duplican — The ellos present form of duplicar is duplican. The other options are the other persons of the same tense.
  7. duplico — The yo present form of duplicar is duplico. The other options are the other persons of the same tense.
  8. duplica — The el present form of duplicar is duplica. The other options are the other persons of the same tense.

Frequently asked questions

When do I use the present tense of duplicar?

Use the present tense of duplicar for habits, facts and what is happening now. For example: Yo duplico la llave en la cerrajería. — "I duplicate the key at the locksmith's." The usage rules above give five situations with examples.

How is the present tense of duplicar formed?

Take the stem duplic- and add the present endings for -ar verbs. The full table is at the top of this page. Remember the spelling change: c becomes qu before e.

What is the difference between the present and the preterite of duplicar?

The present describes a habit or a present fact, while the preterite describes a finished action. Compare Yo duplico el documento para el archivo. with Yo dupliqué el documento para el archivo. — the verb is the same, but the time meaning changes.

How do I practise the present tense of duplicar?

Drill the six forms in the table above until you can say them without looking, then use the duplicar examples and quiz page for more sentences, and test yourself with the Duplicar conjugation page for the full picture across all tenses.

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