Unix Timestamp Converter
Translate Unix timestamps and ISO dates without guessing whether a value is in seconds or milliseconds. The converter shows readable local and UTC representations for debugging logs and APIs.
How to use this tool
- Enter a Unix timestamp or an ISO date in the input field.
- Review the detected unit and the corresponding local and UTC date values.
- Copy the seconds, milliseconds, ISO, or formatted date value you need.
Tips
- Unix timestamps count from 1970-01-01 00:00:00 UTC; values around 10 digits are commonly seconds and 13 digits milliseconds.
- Confirm the timezone expected by the API or log before converting a human-readable date.
Frequently asked questions
What is a Unix timestamp?
It is the number of seconds or milliseconds elapsed since the Unix epoch at 1970-01-01 00:00:00 UTC.
Does the converter use my timezone?
It shows local output for your browser along with UTC so you can compare the two explicitly.