Il faut + Infinitive / Noun
Reach for 'il faut' when you want to express a general necessity or obligation in French — 'it is necessary to / you must / one needs.' It's an impersonal construction: the 'il' refers to nobody specific, like English 'it' in 'it is raining.' Use it for general rules, instructions, advice, and recipe-style requirements. Follow it with an infinitive for an action that's needed, or with a noun for something you need to have.
Structure
Il faut + [INFINITIVE] / Il faut + [NOUN]
il faut + infinitive (e.g. il faut partir, il faut du sucre)
How to Think About It
'Il faut' is impersonal, which is its superpower and its trap. The 'il' is a grammatical placeholder, not a real subject — there's no 'he' or 'it' doing anything. This makes the obligation feel universal: 'one must,' 'people need to,' 'it's required.' To direct it at a specific person, switch to 'il faut que + subjunctive' or just use 'devoir' ('tu dois partir'). Plain 'il faut + infinitive' floats above any individual; it states the rule, not who has to follow it.
Examples
Il faut manger pour vivre.
eel foh mahn-zhay poor veevr
One must eat to live.
Pour faire un gâteau, il faut du sucre.
poor fair uhn gah-toh, eel foh dew sewkr
To make a cake, you need sugar.
Il faut être patient.
eel foh etr pah-syahn
One must be patient.
Common Mistake
Learners conjugate 'faut' as if it had a real subject, or replace 'il' with 'on,' 'tu,' 'je,' etc. But 'il faut' is fixed — 'il' is a dummy subject and 'faut' (from 'falloir') only conjugates in the third person singular. To make it personal, change the structure entirely.
Tu faut partir maintenant.
Il faut partir maintenant. (or: Tu dois partir maintenant.)
Don't Confuse With
Devoir + Infinitive
'Devoir' is personal and conjugates ('je dois, tu dois, il doit...'). Use it when you want to point the obligation at someone specific. 'Il faut' stays general and impersonal.
Il faut que + Subjunctive
When you want to attach the necessity to a specific person while keeping 'il faut,' switch to 'il faut que + subject + subjunctive.' 'Il faut que tu partes' = 'You need to leave.' The infinitive form has no targeted subject.
Avoir besoin de
'Avoir besoin de' = 'to need' as a personal feeling or requirement. 'J'ai besoin de dormir' is about MY need. 'Il faut dormir' is a general statement about needing sleep.
Practice
Il ___ étudier pour réussir.
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faut
Pour cette recette, il faut ___ farine.
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de la
Put in order: [il / patient / faut / être]
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Il faut être patient.
Translate to French: 'You need to sleep at least seven hours.' (impersonal)
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Il faut dormir au moins sept heures.
Write one sentence with 'il faut' giving general advice about learning a language.
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Example answer: Pour apprendre une langue, il faut pratiquer tous les jours. (To learn a language, you need to practice every day.)
Hear It in Real Episodes
This pattern appears in 1 Fluentide episode: