Total
0h 00m
0 minutes
From
To
Difference
8h 00m
480 minutes
Time Calculator — Free Online Tool
Add up work hours, subtract breaks, or find how much time passes between two clock times. Instant, accurate, and completely private.
Instant results — no waiting
No sign-up needed
Free forever
How it works
1Pick a mode — add/subtract durations or find the time between two clock times.
2Enter your times — add rows with +/− for each duration, or set start and end.
3Read the total — results update live as you type, nothing to submit.
Frequently asked questions
What duration format should I use?
Use hours and minutes like 2:30 or 02:30 — anything up to 999:59 is fine. You can also type just minutes, e.g. 90 becomes 1h 30m.
Does the "Time Between" mode handle times past midnight?
Yes. If the end time is earlier than the start time, it is treated as the next day — for example 22:00 to 06:00 gives 8 hours.
Can the total go negative?
Yes — if you subtract more than you add, the total shows as negative (e.g. −1h 30m) so you can see exactly where you stand.
Add / subtract durations · time between clock times · 100% local — your data never leaves this page.