Unix Timestamp Converter
Convert between Unix timestamps and human dates.
About the Unix Timestamp Converter
A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 (UTC), known as the Unix epoch. It is the standard way computers store time. This converter translates a timestamp into a readable UTC, local and ISO 8601 date — and converts any calendar date back into a Unix timestamp. It automatically detects whether your input is in seconds or milliseconds.
How to use it
- Paste a Unix timestamp, or click Now to use the current time.
- Read the UTC, local and ISO versions of that moment.
- Or pick a date and time and click To timestamp to convert the other way.
Frequently asked questions
Seconds or milliseconds?
Unix time is usually in seconds, but JavaScript and some APIs use milliseconds. The tool auto-detects which you pasted based on its magnitude.
What is ISO 8601?
ISO 8601 is an international date format like 2026-01-01T00:00:00Z that sorts naturally and is unambiguous across regions.
Which time zone is used?
The tool shows UTC, your local browser time zone, and the ISO (UTC) form so you can see all three at once.
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