About Timestamp Converter
A Unix timestamp counts the seconds elapsed since 1 January 1970 UTC, which makes it compact and timezone-free but unreadable to humans. This converter translates timestamps into readable dates and back, automatically detecting whether a value is in seconds or milliseconds.
How to use
- Paste a Unix timestamp to see it as a date.
- Or pick a date and time to get the timestamp back.
- Copy the ISO 8601, UTC, or local representation you need.
Frequently asked questions
Seconds or milliseconds?
Unix timestamps are traditionally in seconds, but JavaScript, Java, and many APIs use milliseconds. A present-day value with 13 digits is milliseconds; 10 digits is seconds.
What is the year 2038 problem?
Systems storing timestamps in a signed 32-bit integer overflow on 19 January 2038. Modern platforms use 64-bit values, which postpones the limit far beyond any practical horizon.