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Unix timestamp converter
Convert Unix epoch timestamps (seconds or milliseconds) to human dates in your timezone and UTC, and dates back to timestamps.
🔒 Runs 100% in your browser — safe for real dataCurrent Unix timestamp:
Timestamp → date
Date → timestamp
How to use the unix timestamp converter
- Paste a timestamp to see the date — or pick a date to get its timestamp.
- Tick “Treat as UTC” if your date is in UTC.
- Copy the value you need.
About this tool
A Unix timestamp counts seconds since 1 January 1970 00:00:00 UTC. JavaScript and many APIs use milliseconds instead (13 digits). The converter auto-detects seconds, milliseconds or microseconds and shows the date in your local time, UTC and ISO 8601.
FAQ
Is my data sent to a server?
No. DevKnife tools run entirely in your browser with JavaScript. Nothing you paste — API keys, tokens, customer data — is transmitted or logged, so it is safe for production data.
What is the Year 2038 problem?
Systems that store timestamps as signed 32-bit integers overflow on 19 January 2038 at 03:14:07 UTC. 64-bit timestamps avoid the problem.