Timestamp Formatter
Convert Unix timestamps to readable dates and back, with both UTC and local time shown.
About Timestamp Formatter
Unix timestamps are great for machines and opaque to humans — a number like 1785931200 means nothing until it is converted. This tool turns timestamps into readable local and UTC dates, and reverses the direction so you can turn any date back into an epoch value.
It auto-detects whether the input is in seconds or milliseconds by counting digits, so both 10-digit and 13-digit timestamps work without configuration. The local and UTC values are shown side by side so timezone shifts are visible at once, and date input returns both the seconds and millisecond timestamps.
Developers debugging logs and database rows that store epoch values, QA testers verifying that event times map to the right local date, and anyone checking when a timestamp in a ticket or alert occurred benefit. It removes the mental math from a very common chore.
How to Use
- Paste a Unix timestamp (seconds or milliseconds).
- Read the corresponding local and UTC dates.
- Or enter a date to get its timestamp.
Example
1785931200 2026-08-05 12:00:00 UTC
Unix timestamps count seconds since January 1, 1970. This one resolves to the example date shown.
FAQ
Is my timestamp in seconds or milliseconds?
The tool auto-detects both. Timestamps with 13 digits are milliseconds; 10 digits are seconds.
Why does the date differ from what I expected?
Timezone. The tool shows both your local time and UTC, so you can see exactly where the shift comes from.
Can I convert a date back to a timestamp?
Yes, enter any date and the tool returns both the seconds and millisecond timestamp.
Are decimal or negative timestamps supported?
Yes. Decimal fractions of a second are preserved and displayed, and negative timestamps for dates before 1970 are converted correctly as well.
What timezone is shown as local time?
Your browser's timezone, since the tool runs entirely in the browser and uses your system clock. That makes the local value match what your machine thinks the time is.