Timestamp Converter

No upload · runs in your browser

Right now

Unix seconds

Unix milliseconds

ISO 8601

Timestamp to date

Unix timestamp

Unit

Date to timestamp

Date and time

Read as

Clock, parsing and formatting all run on your device, no timestamp is uploaded.

How it works

Unix Timestamp Converter : Epoch to Date and Back

A live epoch clock plus conversion both ways. Paste a Unix timestamp to see it as a readable date, or pick a date and time to get the epoch value back.

What this does

Live epoch clock ticking every second in seconds, milliseconds and ISO 8601
Seconds or milliseconds detected from the magnitude, with a manual override when a value is ambiguous
Eight rows per conversion, including your IANA zone name and the UTC offset in force on that date
Conversion the other way as well: pick a date and time, read it as local or as UTC, get the epoch back

FAQ

By magnitude. Anything at or above 100,000,000,000 is read as milliseconds, because as seconds that value lands in the year 5138, while as milliseconds it is 1973 onwards. Everything smaller is read as seconds. Set the unit by hand when a value is genuinely ambiguous.

Not on this page. Timestamps are handled as JavaScript numbers, so the range runs to roughly ±273,790 years around 1970 and anything beyond it is refused with a message rather than wrapped. The 2038 limit belongs to systems that store the epoch in a signed 32-bit integer. If a timestamp came out of one of those, it will already have wrapped to a large negative number before you paste it here, and the converter will faithfully show you the 1901 date that number really means.

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