Différence entre dates
Calculez le temps entre deux dates.
Date et heure
Calculateur de durée
Calculez les durées, y compris pendant la nuit.
Vos données
Propulsé par UtilBrixVotre résultat
Duration
8h 30m 0s
- Decimal hours
- 8,5
- Total minutes
- 510
- Total seconds
- 30 600
Les méthodes détaillées et les exemples sont disponibles en anglais.
Step-by-step instructions (English)
- Enter start and end times, including seconds if needed.
- Add dates when the interval spans more than one day or you need an explicit chronology.
- Calculate and compare hours/minutes/seconds with decimal hours.
Formule et méthode
Convert each time to seconds after midnight and subtract. Without explicit dates, an earlier end time adds 24 hours. With dates, add the elapsed calendar days and reject a negative overall duration. Decimal hours equal seconds divided by 3,600.
Exemple pratique
From 22:30 to 01:15 without dates, the overnight duration is 2 hours and 45 minutes, or 2.75 decimal hours.
When this tool is useful
Check the length of a session, an overnight shift, or a recorded activity. Decimal hours help when a downstream worksheet expects a single number rather than an hours-and-minutes duration.
Common mistakes and limitations
- 2 hours 30 minutes is 2.5 decimal hours, not 2.30.
- This is a wall-clock calculation. It does not adjust elapsed time for a time-zone or daylight-saving transition.
Practical questions about this tool (English)
How is an earlier end time handled without dates?
It is treated as occurring on the following day. For example, 22:30 to 01:15 gives 2 hours 45 minutes. Supply dates for longer intervals.
Does the duration subtract breaks?
No. It measures the entered interval. Subtract unpaid breaks separately if you are using the output for a timesheet.