Date Calculator - Days Between Dates, Add or Subtract Days from a Date

Calculate days between two dates, or add/subtract days, weeks, months, or years from any date

🔒 100 % in-browser🆓 Gratuit pour toujours⚡ Pas de signup
Note : L'interface de l'outil ci-dessous n'est actuellement disponible qu'en anglais. On traduit les UI une par une. Voir cet outil en anglais →
Days
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Weeks (≈)
0
Months (≈)
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Years (≈)
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Estimations uniquement. Les résultats sont générés par des formules générales à partir des données que tu saisis, uniquement à titre informatif. Ce ne sont pas des conseils financiers, fiscaux, juridiques, médicaux ou professionnels, et ils ne tiennent pas compte de ta situation individuelle, juridiction, taxes, frais ou état de santé. Vérifie toujours les chiffres importants avec un professionnel qualifié. En utilisant cet outil, tu acceptes nos Conditions & Avertissement.

Comment ça marche

  1. 1
    Pick a mode

    Days between two dates, or add/subtract from a base date.

  2. 2
    Enter dates

    For the between mode, pick start and end. For arithmetic, pick a base date, choose add or subtract, enter an amount, and pick the unit.

  3. 3
    Read the result

    See the exact count of days (and approximate weeks/months/years), or the resulting date.

À propos de Date Calculator - Days Between Dates, Add or Subtract Days from a Date

Free date calculator with two modes. Days between two dates: pick a start and end date to see the exact number of days, weeks, months, and years between them. Date arithmetic: pick a base date and add or subtract days, weeks, months, or years to find a resulting date. Great for deadlines, contracts, project planning, or figuring out anniversaries. Runs entirely in your browser. Date Calculator - Days Between Dates, Add or Subtract Days from a Date sur 712 Tools tourne entièrement dans ton browser via des APIs JavaScript natives - aucun server ne voit jamais tes données. Résultats instantanés, privacy complète, et aucune limite d'upload.

Que ce soit pour une session de debug, un sanity check rapide ou un incident en prod, cet outil est gratuit à utiliser autant que tu veux. Pas de watermarks, pas de signup et pas d'ads dans l'outil.

Questions fréquentes

Does this count business days only?

No - this counts calendar days, including weekends and holidays.

Are months exact?

In between-mode, months are approximate (based on 30.44 days per month). In add/subtract mode, month arithmetic follows standard calendar rules - adding one month to Jan 31 lands on Feb 28 or 29.

Is my date data uploaded?

No. All calculations run entirely in your browser.

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