Date & Time utility
Unix Timestamp Converter
Convert Unix timestamps in seconds or milliseconds to readable dates.
● This tool runs entirely in your browser. Your input is never uploaded to our servers.
Output
Your result will appear here…
How to use Unix Timestamp Converter
- Paste a Unix timestamp in seconds or milliseconds.
- Select Convert to see its UTC and local date.
- Copy the result if you need it elsewhere.
Example
Input:
1735689600
Output:
UTC: 2025-01-01T00:00:00.000Z Unix seconds: 1735689600
Use cases
- Inspect timestamps in application logs.
- Check API and database date values.
- Verify seconds versus milliseconds.
About this tool
Convert Unix timestamps in seconds or milliseconds to readable dates. Processing happens locally in your browser, so your input is not sent to a server or included in analytics.
Frequently asked questions
Does this accept seconds and milliseconds?
Yes. Values below one trillion are treated as seconds; larger values are treated as milliseconds.
Which timezone is shown?
The result includes UTC and the local timezone configured on your device.
Is the timestamp uploaded?
No. Conversion runs in your browser.