Convert epoch seconds or milliseconds into readable dates in your time zone, UTC and ISO 8601, or turn a date back into a Unix timestamp.
Free, no sign-up
Runs locally in your browser
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Your files are processed on this device and are never uploaded to a server.
How to use the Timestamp Converter
1
Paste a timestamp or pick a date.
2
Read the converted values in every format.
Seconds or milliseconds?
10-digit values are seconds (used by Unix, PHP and most APIs); 13-digit values are milliseconds (used by JavaScript). The unit is detected automatically.