Calculateur de durée

Calculate duration between times, add/subtract duration, convert time units, and find elapsed time with step-by-step solutions.

Your Input

Format : HH:MM ou HH:MM:SS (par exemple, 09h00 ou 09:00:00)

Peut être le lendemain (par exemple, de 23h00 à 02h00)

Select a calculation type, enter your times or duration, then click Calculate to see results with step-by-step solution and visualization.

Guide d'utilisation complet

Quelle est la durée ?

Time duration is the amount of time that passes between two points in time, or the length of time something takes. This calculator finds duration between two clock times, adds or subtracts duration from a time, converts between time units, and computes end time from a start time and elapsed duration.

Time format: HH:MM or HH:MM:SS (24-hour)

Format de l'heure

HH:MM: Heures : minutes (par exemple, 14 h 30)

HH:MM:SS: Heures : Minutes : Secondes (par exemple, 14 : 30 : 45)

Use 24-hour format (0-23 hours).

Types de calcul

Durée entre les heures

Enter start and end time; duration can cross midnight.

Ajouter/soustraire la durée

Add or subtract hours, minutes, seconds, or days from a given time.

Convertir les unités de durée

Convert between seconds, minutes, hours, days, weeks, months, and years.

Calculer le temps écoulé

From a start time and elapsed duration, get the end time.

Comment utiliser cette calculatrice

  1. Select calculation type from the dropdown.
  2. Enter time values (HH:MM or HH:MM:SS) or duration and units in the form.
  3. Click Calculate to see the result, detail cards, visualization (when available), and step-by-step solution.
  4. Click Reset to clear inputs and results.

Remarques importantes

  • Use 24-hour format (0-23 hours). Duration can cross midnight.
  • Subtracting duration may wrap to the previous day. All calculations use seconds internally.
  • Months and years are approximate (30 and 365 days).

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