JSON formatter & validator
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Unix timestamp converter
Convert Unix epoch timestamps to human-readable dates and back. Supports seconds and milliseconds, local time, UTC, and ISO 8601.
Current Unix timestamp
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Timestamp to date
Date to timestamp
How to use Unix timestamp converter
Convert a Unix timestamp (seconds or milliseconds since 1 January 1970 UTC) to a readable date, or turn a date and time back into an epoch timestamp. The current timestamp updates live at the top.
How it works
- Timestamps with 13 or more digits are treated as milliseconds; shorter values as seconds
- Results show local time, UTC, ISO 8601, and relative time (for example “3 days ago”)
- Dates can be entered in your local time zone or in UTC
Unix timestamp converter FAQs
Is Unix timestamp converter free?
Unix timestamp converter is a free online tool on ReallyUseful.Tools. No account is required.
Does Unix timestamp converter run in my browser?
Unix timestamp converter is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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