Unix Timestamp Converter
Free online Unix epoch timestamp converter. Turn a 10-digit (seconds) or 13-digit (milliseconds) timestamp into a readable date, or convert any date/time back into a timestamp. The current timestamp ticks live at the top — handy for development, logs and API debugging, all locally. DeveloperRuns locally
Use this tool
How to use
- The current seconds and milliseconds timestamps tick at the top and can be copied.
- Paste a number into “Timestamp to date”; seconds vs milliseconds is detected automatically.
- Pick a date/time under “Date to timestamp” to get its epoch value.
Frequently asked questions
What is the difference between 10- and 13-digit timestamps?
10 digits count seconds since 1970-01-01 and 13 digits count milliseconds. This tool detects the length automatically, so you don't need to multiply or divide by 1000.
Which timezone is used?
Dates are shown in your device's local timezone, with the UTC time and ISO string shown alongside for comparison.
Why does the top timestamp keep changing?
A Unix timestamp is the number of seconds elapsed since 1970-01-01, so it increments every second — that is expected.