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Unix Timestamp Converter

Convert a Unix timestamp into a readable date in your time zone and UTC, or turn a date into a timestamp.

Date & TimeFreeNo sign-up
Runs in your browser. Nothing you enter is uploaded.

01How to use the Unix Timestamp Converter

  1. 01Choose the direction: timestamp to date, or date to timestamp.
  2. 02Enter a timestamp in seconds or milliseconds, or pick a date and time.
  3. 03Copy the format you need: local time, UTC, ISO 8601 or the raw number.

02What a Unix timestamp is

Seconds elapsed since 1970-01-01 00:00:00 UTC (the Unix epoch),
ignoring leap seconds.

Date = epoch + timestamp × 1,000 ms
Values of 100,000,000,000 or more are read as milliseconds.

03Examples

0 is Thursday, 1 January 1970, 00:00:00 UTC.

1767225600 is 1 January 2026, 00:00:00 UTC.

1767225600000 is the same moment in milliseconds, as JavaScript’s Date.now() returns.

04Frequently asked questions

Is a Unix timestamp tied to a time zone?

No. It counts seconds from a fixed moment in UTC. The same timestamp shows different local times in different time zones.

What is the year 2038 problem?

Systems that store timestamps as signed 32-bit integers overflow on 19 January 2038. Modern systems use 64-bit values and are not affected.

Are negative timestamps valid?

Yes. They represent dates before 1 January 1970. For example, −86400 is 31 December 1969.