What is a Unix timestamp?

A numeric representation of time: seconds (or milliseconds) elapsed since 1970-01-01 00:00:00 UTC.

Seconds or milliseconds?

APIs use both formats. Toggle the ms switch to change the unit.

Use the 'From date/time' field or paste a date: the tool updates the timestamp automatically.

The timestamp is UTC-based; formatting into a local date depends on the selected timezone.

Developer Tools/Timestamp Converter

Current Unix Time

1791824671

Timestamp

sec

Human-readable

1 second ago

Monday, October 12, 2026 at 5:04:31 PM UTC

Timezone

ISO 8601

2026-10-12T17:04:31.000Z

RFC 3339

2026-10-12T17:04:31.000Z

Unix time is a system for describing a point in time. It is the number of seconds that have elapsed since the Unix epoch, minus leap seconds.

Convert API timestamps (seconds or milliseconds) to readable dates during debugging.
Generate a Unix timestamp to schedule jobs, cache expiry or signed URLs.
Check what a timestamp corresponds to in a different timezone.
Copy ISO 8601/RFC 3339 strings for databases and logs.

What is a Unix timestamp?: A numeric representation of time: seconds (or milliseconds) elapsed since 1970-01-01 00:00:00 UTC.
Seconds or milliseconds?: APIs use both formats. Toggle the ms switch to change the unit.
How to convert a date to a timestamp?: Use the 'From date/time' field or paste a date: the tool updates the timestamp automatically.
Why does the human-readable date change with timezone?: The timestamp is UTC-based; formatting into a local date depends on the selected timezone.