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Unix Timestamp (Epoch) Converter – Convert Epoch to Date & Date to Epoch (Free Online)

Unix Timestamp (Epoch) Converter – Epoch ↔ Date/Time

Use this free Unix Timestamp Converter to convert epoch seconds/milliseconds to a human-readable date/time and back. Supports UTC, time zones, and quick copy buttons. Everything runs in your browser.

Epoch → Date

Enter seconds or milliseconds
Auto-detects seconds vs ms if the number is very large.

Date → Epoch

If blank, use Now

Why Use This Epoch Converter?

  • Seconds & Milliseconds – convert both directions.
  • Time Zones & UTC – display results in your chosen zone.
  • Copy fast – one-click copy for ISO/epoch outputs.
  • Private – 100% client-side; nothing uploaded.

FAQ – Unix Timestamp (Epoch) Converter

What’s the difference between seconds and milliseconds?

Epoch seconds count in whole seconds; milliseconds have three extra digits. Example: 1724371200 (s) ↔ 1724371200000 (ms).

Why does the same epoch show different local times?

The epoch is absolute (UTC). Local time depends on your time zone and daylight saving rules.

Can I input a date/time in a specific time zone?

You can interpret input as Local device time or UTC. For other zones, convert their local time to UTC first, then use this tool.

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