Epoch Converter
Convert Unix timestamps to readable dates and back, with a live clock showing the current epoch. Seconds, milliseconds, microseconds and nanoseconds are detected automatically, so the most common timestamp mistake cannot happen here.
Current Unix time · your local time
Common questions
- How does it know whether my number is seconds or milliseconds?
- By magnitude. A ten-digit number is seconds, thirteen is milliseconds, and so on. Getting this wrong silently produces a date in 1970 or the far future, so the unit that was used is always shown.
- Can I convert a date back to a timestamp?
- Yes. Type a date like 2026-08-30 14:30 and you get the epoch seconds and milliseconds alongside the other formats.
- Does it handle time zones?
- Yes. Switch between your local zone and UTC, and the choice is remembered on this device. Unix timestamps are zone-independent by definition; the readable formats are what change.
- What about dates before 1970?
- Negative timestamps work and resolve correctly. -86400 is 31 December 1969.
- Is anything sent to a server?
- No. The clock and every conversion run in your browser.
- What happens after 2038?
- Nothing here. The 2038 problem affects systems storing timestamps in a signed 32-bit integer, which overflows on 19 January 2038. This tool uses JavaScript numbers and handles dates far beyond that, as well as negative timestamps for dates before 1970.
Exact to the second, and to the millisecond where your input carries them. Conversions use UTC internally and display your local zone alongside, so the two are never confused. Dates before 1970 and beyond 2038 are handled.