Unix Timestamp Converter

Convert Unix epoch timestamps (seconds/ms) to ISO 8601, UTC, and local times.

About this tool

Convert cryptic Unix timestamps into readable calendar dates and relative time spans.

How to use this tool

  1. Enter timestamp or date string
  2. Click Run
  3. Read converted date table

How it works

Converts seconds and milliseconds against UTC and local system timezone clocks.

When to use this tool

  • Debugging database created_at timestamps
  • Inspecting server log timestamps

Frequently asked questions

Does it auto-detect seconds vs milliseconds?

Yes, timestamps greater than 100,000,000,000 are automatically handled as milliseconds.

Limitations

Supports dates representable in JavaScript Date objects (-100,000,000 to +100,000,000 days).

Privacy

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