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Unix Timestamp Converter

Convert Unix epoch timestamps to dates and back, in seconds or milliseconds.

  1. Paste your input
  2. Choose the options
  3. Copy the output
Runs in your browser. Your data and files never leave your device.

About the Unix Timestamp Converter

See the current Unix time, convert any timestamp to local time, UTC and ISO 8601, and turn a date back into a timestamp. Seconds and milliseconds are detected automatically.

How does the Unix Timestamp Converter work?

A Unix timestamp counts the seconds since 1 January 1970 00:00:00 UTC (the “epoch”), ignoring leap seconds. JavaScript and many APIs use milliseconds instead — a 13-digit number. The same instant is shown in UTC, your local time and ISO 8601.

Example

1767225600 is 2026-01-01T00:00:00Z. The same instant in milliseconds is 1767225600000.

Frequently asked questions

What is a Unix timestamp?

The number of seconds since 00:00:00 UTC on 1 January 1970, not counting leap seconds.

What happens in 2038?

Systems that store timestamps in signed 32-bit integers overflow on 19 January 2038. 64-bit timestamps are fine.

What is the year 2038 problem?

Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038. Modern systems use 64-bit values, which last far longer.

Are Unix timestamps affected by time zones?

No. A timestamp is the same everywhere; only its display in local time changes.

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