UUID v4 Generator
Developer Local only
Unix Timestamp Converter
Local onlyConvert Unix seconds or milliseconds to readable dates and back.
Ready
Browser timezone: — Converted locally on this device
Timestamp to date
Convert Unix seconds or milliseconds into readable dates
Enter a timestamp to see its local, UTC, and ISO representations.
Date to timestamp
Convert a local date and time into Unix timestamps
The selected date and time uses your browser timezone.
Choose a date and time to generate second and millisecond timestamps.
How to use it
- 01
Enter a timestamp
The tool can automatically distinguish seconds from milliseconds.
- 02
Review each format
Compare UTC, ISO 8601, and the timezone configured on your device.
- 03
Convert in reverse
Pick a local date and get both Unix seconds and milliseconds.
Frequently asked questions
What timezone is a Unix timestamp in?
A Unix timestamp represents an instant independent of timezone; only its displayed date uses a timezone.
How is the unit detected?
Values large enough to represent modern dates in milliseconds are treated as milliseconds; smaller values are treated as seconds.
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