Time Duration Calculator
To calculate a time duration, enter a start and end date and time. ClickZM shows the elapsed time in days, hours and minutes, plus total hours, minutes, seconds and weeks.
- Free
- No signup
- Runs in your browser
Loading tool…
How to use Time Duration Calculator
- 1Enter your values in the fields; defaults show a worked example.
- 2Pick the units or options that apply to you.
- 3Read the result, which updates instantly as you type.
- 4Check the formula note under the result to see exactly how it was worked out.
Time Duration Calculator: questions people ask
How many hours are between 9 am and 5:30 pm?
8.5 hours (8 hours 30 minutes).
Does it account for daylight saving?
Both times are treated as wall-clock times in one zone, so a daylight-saving shift between them is not added.
Is my data uploaded when I use the Time Duration Calculator?
No. The Time Duration Calculator runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the Time Duration Calculator work on iPhone, Android and Mac?
Yes. The Time Duration Calculator runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the Time Duration Calculator free?
Yes. The Time Duration Calculator is free with no signup, no watermark and no daily limit.