Developer Tools

Unix Timestamp Difference & Duration Calculator

Calculate exact days, hours, minutes, and seconds between two timestamps or dates in real time.

Unix Timestamp (sec):
Unix Timestamp (ms):
Local Time:
UTC Time:
ISO 8601:
Relative:

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Frequently Asked Questions

Does this support epoch seconds and milliseconds?

Yes, handles both 10-digit seconds and 13-digit millisecond timestamps.

Can I enter human dates?

Yes, accepts standard ISO dates, UTC strings, and numeric timestamps.

Does it account for leap seconds?

Calculates exact elapsed calendar durations and total seconds.

Embed this Tool on Your Site

Copy and paste this snippet into your blog, documentation, or tech site to embed this interactive utility: