Tools / Unix Timestamp Converter
Unix Timestamp Converter
Convert between Unix timestamps, ISO 8601, UTC, and your local time — in both seconds and milliseconds. Runs entirely in your browser.
Paste a 10-digit (seconds) or 13-digit (milliseconds) Unix timestamp, or any ISO 8601 date string.
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// About this tool
Unix Timestamp Converter
This converter translates between Unix timestamps and human-readable dates. A Unix timestamp counts the seconds (or milliseconds) since 1970-01-01 00:00:00 UTC — the convention most APIs and databases use to store a moment in time.
Paste a 10-digit seconds timestamp, a 13-digit milliseconds timestamp, or any ISO 8601 date string, and get the equivalent in every format at once: milliseconds, seconds, ISO 8601 UTC, local time, and a readable form.
Everything runs locally in your browser. There is no server, so nothing you paste is transmitted, and the tool works fully offline.
// When to use it
Decode a timestamp from an API response
Paste the value an API returned and read it as a human-readable local date instead of a number.
Get a timestamp for a query or script
Type or paste a date and copy the seconds or milliseconds value to use in a filter, query parameter, or script.
Check the current Unix time
The live 'now' panel shows the current timestamp in seconds, updating every second.
// Questions
What is a Unix timestamp?
It's a number counting seconds (or milliseconds) since January 1, 1970 00:00:00 UTC. 10 digits means seconds; 13 digits means milliseconds.
Are my values sent to a server?
No. All conversion happens locally in your browser. Nothing is uploaded, and the tool works offline.
Does it handle milliseconds?
Yes. A 13-digit input is interpreted as milliseconds, and the converter outputs both the seconds and milliseconds forms of any date.
What date formats can I paste?
Any value JavaScript's Date can parse — including ISO 8601 strings like 2024-04-20T06:00:00Z, plus numeric Unix timestamps in seconds or milliseconds.
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