Time Duration Calculator
Calculate the exact duration between two dates and times.
Your file never leaves this browser tab — everything runs locally on your device.
How to use time duration calculator
- Pick a start date and time, and an end date and time.
- Read the duration broken down into days, hours, minutes and seconds, plus the total in hours.
Common use cases
- Timing how long a meeting, shift or event lasted.
- Calculating elapsed time between two timestamps in a log or report.
- Working out travel duration between a departure and arrival time.
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