Unix Timestamp Converter
Convert a Unix / epoch timestamp to a readable date — in UTC, your local time and relative form — or turn a date back into a timestamp. Instant and private.
To convert a timestamp, enter a Unix timestamp or a date and see it in UTC, local time and relative form instantly — or turn a date back into a timestamp.
Showing the current time live. Type a value to convert it.
Zero Server Uploads
Files process in local RAM
Instant WASM Speed
No waiting queues or lags
Unlimited Batching
Convert files without limits
How to use Timestamp Converter
- 1Enter a Unix timestamp (seconds or milliseconds) or a date.
- 2See it converted to ISO, UTC, local and relative time.
- 3Or click 'Use now' for the current time.
- 4Copy whichever format you need.
How it works
Enter a Unix timestamp (seconds or milliseconds are auto-detected) to see it as ISO 8601, UTC, your local time, and a relative description like “3 hours ago”. Or enter a date to get its timestamp. The current time is shown live.
Seconds vs milliseconds
Unix timestamps are usually in seconds (10 digits today), while JavaScript uses milliseconds (13 digits). This tool detects which you pasted and converts accordingly.
Frequently Asked Questions
Does it handle milliseconds?
Yes. Values with 12 or more digits are treated as milliseconds; shorter values are treated as seconds.
What timezone is used?
It shows the date in UTC, in your browser's local timezone, and as a relative time, so you can read whichever you need.
Is anything uploaded?
No. All conversion happens locally in your browser.