"Volerci vs metterci" = "'Volerci' vs 'Metterci' — 'It takes' (impersonal) vs. 'to take (someone/something) (time)' (personal)" - Italian Grammar

What do volerci and metterci mean?

Short definitions

Volerci Volerci is an impersonal expression used to say that something is needed or that a certain amount of time, money, courage, etc. is required. In English the closest translations are "it takes" or "one needs/it is needed." You will only use the third person forms: ci vuole (singular) / ci vogliono (plural) and their tenses.

Example (time):
- Italian: "Per finire l'esame ci vuole un'ora."
- English: "To finish the exam it takes one hour." (or "You need one hour to finish the exam.")

Example (requirement):
- Italian: "Per questo lavoro ci vuole esperienza."
- English: "This job requires experience."

Metterci
Metterci is a pronominal use of mettere that tells how long a person or thing spends to do something. The subject is the person or thing that "takes" the time, so the verb is conjugated for that subject (io, tu, lui/lei, noi, ecc.). In English: "(I/you/they) take(s) (time)."

Example (person):
- Italian: "Io ci metto due ore a leggere il libro."
- English: "I take two hours to read the book."

Example (thing):
- Italian: "La macchina ci mette trenta minuti per riscaldarsi."
- English: "The car takes thirty minutes to warm up."

When do I use volerci vs metterci?

Use volerci when you want to speak impersonally (what is needed)

Volerci is impersonal: it expresses what is needed or how long something usually takes in general. You do not say who takes that time.
Typical patterns: "Ci vuole/ci vogliono + noun" or "Ci vuole/ci vogliono + per + infinitive."

Examples:
- "Per cuocere la pasta ci vogliono 10 minuti." (It takes 10 minutes to cook the pasta.)
- "Per imparare una lingua ci vuole pazienza." (It takes patience to learn a language.)

Use metterci when you specify who spends the time

Metterci makes the person (or thing) the subject: "Io ci metto..., Lui ci mette..., La macchina ci mette..."
Typical pattern: "Subject + ci + mettere (conjugated) + time + a/per + infinitive."

Examples:
- "Io ci metto mezz'ora per andare al lavoro." (I take half an hour to get to work.)
- "Marco ci mette un'ora a preparare la torta." (Marco takes an hour to prepare the cake.)
- "La stampante ci mette troppo tempo." (The printer takes too long.)

Questions: "Quanto ci vuole?" vs "Quanto ci metti?"

"Quanto ci vuole per... ?" asks generally: "How long does it take (in general) to...?" Use volerci.
"Quanto ci metti per... ?" asks about a specific person: "How long do you take to...?" Use metterci.

Examples:
- "Quanto ci vuole per andare a Roma?" (How long does it take to go to Rome?)
- "Tu quanto ci metti per andare a Roma?" (How long do you take to go to Rome?)

How are they formed? Conjugation and grammar

Volerci: forms and agreement

Present: ci vuole (singular) / ci vogliono (plural)
Imperfect: ci voleva / ci volevano
Future: ci vorrà (singular) / ci vorranno (plural) — note the irregular stem vorr- (from volere)
Conditional: ci vorrebbe / ci vorrebbero
Compound tense (passato prossimo): ci è voluto (singular) / ci sono voluti (plural). Volerci uses essere as auxiliary in compound tenses and the past participle agrees in gender and number with the noun that is the real subject.

Examples:
- "Ci vuole un'ora." (Present — It takes one hour.)
- "Ci sono volute tre ore." (Passato prossimo — It took three hours.)
- "Ci vorranno due giorni." (Future — It will take two days.)

Metterci: forms and auxiliary

Present (io/tu/...): io ci metto, tu ci metti, lui/lei ci mette, noi ci mettiamo, voi ci mettete, loro ci mettono
Imperfect: (io) ci mettevo, etc.
Future: ci metterò, ci metterai, ci metterà, ecc.
Conditional: ci metterei, ecc.
Compound tense (passato prossimo): ci ho messo, ci hai messo, ci ha messo, ecc. — metterci uses avere as auxiliary, so the past participle (messo) does not agree with the subject.

Examples:
- "Io ci metto dieci minuti." (Present — I take ten minutes.)
- "Ieri ci ho messo tre ore." (Passato prossimo — Yesterday I took three hours.)
- "Loro ci metteranno meno tempo domani." (Future — They will take less time tomorrow.)

Where do I put "ci" and what about modal verbs (potere, dovere, volere)?

"Ci" is part of the expression and normally comes before the verb when the verb is finite: "Ci metto un'ora." In compound tenses it goes before the auxiliary: "Ci ho messo un'ora."
With modal verbs you have two options: put "ci" before the modal or attach it to the infinitive.
Example: "Ci posso mettere dieci minuti." or "Posso metterci dieci minuti." (Both: "I can take ten minutes.")
Negative: "Non ci metto molto." or "Non posso metterci meno di un'ora." (I don't take long / I can't do it in less than an hour.)

Comprehensive examples and contrasts

General impersonal time and requirements (volerci)

"Per fare il pane ci vogliono 3 ore." — It takes 3 hours to make bread.
"Per risolvere quel problema ci vuole attenzione." — Solving that problem requires attention.
"Ci vogliono soldi per aprire un'attività." — You need money to open a business.
"Per leggere tutto il libro ci vuole tempo." — It takes time to read the whole book.

Specific person/thing spends time (metterci)

"Io ci metto venti minuti per andare a scuola." — I take twenty minutes to get to school.
"Marta ci mette un'ora a prepararsi." — Marta takes an hour to get ready.
"Il treno ci mette tre ore per arrivare." — The train takes three hours to arrive.
"Noi ci mettiamo parecchio a capirlo." — We take quite a while to understand it.

Paired contrasts (same situation, different focus)

General: "Per salire a piedi al castello ci vogliono 30 minuti."
"It takes 30 minutes (in general) to walk up to the castle."
Personal: "Io ci metto 45 minuti perché cammino piano."
"I take 45 minutes because I walk slowly."

- General (requirement): "Per questa ricetta ci vogliono tre uova."
- "This recipe needs three eggs."
- Wrong to use metterci: "*Io ci metto tre uova per questa ricetta.*"
- Correct: "Io metto tre uova in questa ricetta." (Here metto is used transitively: "I put three eggs into the recipe.")

Past and future examples

Volerci (past): "Per finire il progetto ci sono volute due settimane." — It took two weeks to finish the project.
Metterci (past): "Io ci ho messo due settimane per finire il progetto." — I took two weeks to finish the project.
Volerci (future): "Ci vorrà pazienza." — It will take patience.
Metterci (future): "Domani ci metterò un'ora per finire." — Tomorrow I'll take an hour to finish.

Questions and negatives

"Quanto ci vuole per arrivare in centro?" — How long does it take to get downtown? (general)
"Quanto ci metti per arrivare in centro?" — How long do you take to get downtown? (to you)
"Non ci vuole molto per imparare le basi." — It doesn't take long to learn the basics.
"Non ci metto molto a finire questo compito." — I won't take long to finish this task.

Other meanings of metterci (non-temporal) — short note

Mettere + ci can also be literally "to put something in it/there" when "ci" is locative, e.g.: "Ci metto i vestiti nel bagaglio." (I put the clothes in it/the luggage.)
Context tells whether "ci" is temporal (metterci = to take time) or locative (to put into/there).

Common mistakes and how to correct them

1) Using volerci with a person (instead of metterci)

Incorrect: "*Io ci voglio due ore per arrivare.*"
Correct: "Io ci metto due ore per arrivare." (Use metterci when the subject is a person.)

2) Forgetting the "ci" with metterci

Incorrect: "*Ho messo due ore per finire.*"
Correct: "Ci ho messo due ore per finire." or "Ho messo due ore per finire." (Note: Many native speakers do say "Ho messo due ore"—but "ci ho messo" is the safest and clearest for temporal meaning.)

3) Wrong auxiliary and agreement in the past for volerci

Incorrect: "*Ci ho voluto due ore.*"
Correct: "Ci è voluta un'ora." (singular) or "Ci sono volute due ore." (plural). Volerci uses essere and the past participle agrees with the time/thing.

4) Confusing requirement (volerci) with the act of placing/putting (mettere)

Incorrect: "*Per questa torta ci mettono tre uova.*" (If you mean "this recipe requires three eggs,")
Correct: "Per questa torta ci vogliono tre uova." or "Questa torta richiede tre uova." If you mean "you put three eggs in the recipe," say "Ci metto tre uova in questa ricetta." (subject = I)

Quick summary / cheat sheet

Volerci = impersonal "it takes / one needs"; use ci vuole (sg) / ci vogliono (pl); agrees with the noun; uses essere in compound tenses.
Metterci = "(someone/something) takes (time)"; conjugate mettere for the subject + ci; uses avere in compound tenses (ci ho messo...).
Question difference: "Quanto ci vuole...?" (general) vs "Quanto ci metti...?" (to a person).

Glossary (brief)

Impersonal verb: a verb form that has no grammatical subject (English: "it takes"). Volerci is impersonal.
Pronominal verb: a verb used with a pronoun like "ci"; metterci is a pronominal use of mettere.
Auxiliary verb: the helper verb used to form compound tenses (essere or avere). Volerci uses essere; metterci uses avere.
Past participle: the form used in compound tenses (e.g., voluto, messo). With essere it agrees in gender/number.

Final tips

If you want to say "it takes" in a general sense or what is needed, use volerci: "Ci vuole/ci vogliono..."
If you want to say how long someone or something takes, use metterci: "(Subject) + ci + mettere (conjugated) + time..."
When in doubt, test the sentence by changing the subject to a person: if the verb should change (Io ci ___), use metterci. If the sentence stays impersonal (It takes...), use volerci.

Examples to practise mentally (read and translate):
- "Per scrivere la tesi ci vuole tempo." (It takes time to write the thesis.)
- "Io ci metto sei mesi per scrivere la tesi." (I take six months to write the thesis.)
- "Quanto ci vuole per preparare la cena?" (How long does it take to prepare dinner?)
- "Quanto ci metti per preparare la cena?" (How long do you take to prepare dinner?)

If you keep this distinction in mind — impersonal requirement (volerci) vs. who actually spends the time (metterci) — you will use these two verbs correctly in most situations.