How to use the Unix timestamp converter
- 1Paste a timestamp — seconds or milliseconds are detected automatically.
- 2Read it in UTC, your local time, ISO 8601 and relative time.
- 3Or pick a date and time to get the timestamp.
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Frequently asked questions
Seconds or milliseconds?
Unix time is usually in seconds (10 digits today). JavaScript and many APIs use milliseconds (13 digits). The tool detects which one you pasted.
Is my data sent anywhere?
No. Everything is calculated in your browser on your own device — nothing you type or upload is sent to a server.