Unix Timestamp Converter
Convert between Unix time (seconds or milliseconds) and human-readable dates.
1787217271Pick a date to convert.
How to convert Unix timestamps
- Check the live clock. The current Unix time at the top updates continuously.
- Convert a timestamp. Enter one to get its ISO 8601, UTC and local date.
- Or go the other way. Pick a date to get its Unix time in seconds and milliseconds.
What happens to your data
Conversion uses your browser's built-in Date object and runs entirely client-side — nothing you enter is sent to OpenToolkit.
What this converter supports
Live clockCurrent Unix time, updating continuously
Input formatsSeconds or milliseconds, auto-detected
OutputISO 8601, UTC and local date/time
ReversePick a date to get Unix seconds and milliseconds
ProcessingEntirely in your browser tab
Common reasons to convert a timestamp
- Decode a timestamp found in a log file or database row.
- Convert a calendar date into the Unix time an API expects.
- Check what a specific epoch value means in both UTC and your local time.
- Grab the current Unix time for a script, test fixture or API call.
Frequently asked questions
Is my data uploaded anywhere?
No. All conversion happens locally using your browser's Date object.
Does it know whether I entered seconds or milliseconds?
Yes — the digit length is used to auto-detect which unit you entered, resolving the most common source of confusion.
Does it show my local timezone?
Yes — results are shown in both UTC and your browser's local timezone side by side.
Can I get the current Unix time quickly?
Yes — the live clock at the top always shows the current Unix time, updating in real time.
Last reviewed: August 2026