Timestamp Converter — Unix Epoch to Date
Paste an epoch value to read it as a date, or type a date to get the epoch back. Seconds or milliseconds, UTC or local, with a plain-English “how long ago”.
Three quick steps
1 · Paste
Drop in a Unix timestamp, or type a date into the lower box.
2 · Pick
Tell it whether the number is seconds or milliseconds, and choose UTC or local time.
3 · Read
See the ISO form, UTC, local time and how long ago it was, ready to copy.
About timestamps
What is a Unix timestamp?
It is the number of seconds that have passed since the first moment of 1 January 1970 in UTC, which gives computers a single unambiguous way to record an instant.
Seconds or milliseconds — which do I have?
Ten digits is almost always seconds and thirteen digits is milliseconds. Leave the unit on automatic and the tool decides for you.
Is any of this sent to a server?
No. Every conversion is done by your browser’s own date engine, so the tool works offline once the page has loaded.
Why does my local time differ from UTC?
Local time applies your device’s time zone and daylight saving rules. UTC has neither, which is why logs and databases usually store UTC.
Which date formats are accepted?
ISO forms such as 2025-01-01 or 2025-01-01T12:30:00 work best. Other common formats are attempted, but ISO is the one that never gets misread.