Calculate Time Duration

Enter a start time and an end time to find the duration between them.

If the end time is earlier than the start time, it's treated as being on the next day.
Duration
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Enter both times to calculate.

What Is a Time Calculator?

A time calculator finds the exact duration between a start time and an end time, broken down into hours, minutes, and seconds — useful for tracking work hours, event durations, or elapsed time.

How Does This Calculator Work?

01

Enter Start Time

Pick the time you started from.

02

Enter End Time

Pick the time you finished at.

03

Get Your Duration

Instantly see the total elapsed time.

Frequently Asked Questions

The calculator assumes the end time falls on the next day and calculates the duration accordingly — useful for overnight shifts.

Yes. You can enter times down to the second for a precise duration.

Yes. The calculator can be used online without creating an account.