About Timestamp Converter
A Unix timestamp counts seconds since 1 January 1970, and it is how computers store dates in databases, APIs and log files. It is compact and timezone-free, but unreadable to humans - 1761120000 means nothing at a glance, while 22 October 2026 does.
This converter translates both ways: paste a timestamp to see the date in your local time, UTC and ISO format, or pick a date to get its timestamp in seconds and milliseconds.
How to use it
- For a timestamp: paste it and press Convert to date.
- For a date: pick it and press Convert to timestamp.
- Copy the value you need from the result.
Frequently asked questions
Seconds or milliseconds - which is mine?
Count the digits. Ten digits means seconds, thirteen means milliseconds. This tool detects it automatically: values above 9,999,999,999 are treated as milliseconds.
Why does the same timestamp show different local times?
Because local time depends on timezone. The UTC value is the same everywhere; your local time shifts it by your timezone offset.
What is the 2038 problem?
Old 32-bit systems store timestamps in 32 bits, which overflow in January 2038. Modern systems use 64 bits, so this tool has no such limit.
Is anything uploaded?
No. Conversion runs entirely in your browser.