Unix Timestamp Converter
Convert a Unix timestamp (seconds or milliseconds) into a readable date and back, with time zone and ISO 8601.
Processed in your browserFree
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About this tool
Turn a Unix timestamp (seconds or milliseconds, detected automatically) into a full date: ISO 8601, UTC, local time with time zone, relative time, day of the year and ISO week. In the other direction, pick a date or type it in French date format to get its timestamp. The current time is displayed continuously.
How to use this tool
- 1Paste a timestamp or a date (ISO, or DD/MM/YYYY French format).
- 2Read the conversions in every format.
- 3Copy the value you want.
Limits to know
- Values below 10¹¹ are interpreted as seconds, above as milliseconds.
- The local time zone is your device's; dates entered without a time zone are interpreted in that zone.
- Accepted formats
- Text
- Maximum size
- 2 MB
Privacy and file processing
Data is processed in your browser and is never sent to a server.
Read our privacy policyFrequently asked questions
A value below 10¹¹ is read as seconds, above as milliseconds (JavaScript timestamp convention). You can force the unit if your source is unusual.
Your device's time zone, shown next to the date, along with the UTC and ISO 8601 versions. A date entered without a time zone is interpreted in that local zone.