Unix Timestamp Converter
Free Unix timestamp converter. Convert timestamps (seconds or milliseconds) to human-readable dates and times, or any date back to a Unix timestamp.
Seconds (10 digits) or milliseconds (13 digits)
How to use Unix Timestamp Converter
- 1
Paste a Unix timestamp (seconds or ms) into the input.
- 2
The readable date, ISO string and relative time appear instantly.
- 3
Alternatively, pick a date with the date input to get its timestamp.
- 4
Copy the result you need.
Key features
Seconds and milliseconds support
Timestamp to readable local date & time
Any date back to Unix timestamp
ISO 8601 output
Relative time display ('3 days ago')
Instant 'now' button
Unix Timestamp Converter — FAQ
It is the number of seconds (or milliseconds) since 00:00:00 UTC on 1 January 1970, excluding leap seconds. Computers use it because it is compact and timezone-free.
10 digits is seconds; 13 digits is milliseconds. This tool supports both and detects which one you pasted automatically.
The timestamp itself is UTC. The readable output is shown in your local timezone, which is why the same timestamp can display differently for different users.
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