Unix timestamps are efficient for computers but unreadable for humans. This tool converts a raw timestamp into a local, UTC, and ISO 8601 date — or goes the other way, turning a date you pick into its Unix seconds and milliseconds — instantly, in your browser.
How to use the timestamp converter tool
- 1
Convert a timestamp to a date
Enter a Unix timestamp (seconds or milliseconds) to see the local, UTC, and ISO 8601 date.
- 2
Convert a date to a timestamp
Pick a date and time to get its Unix seconds and milliseconds.
- 3
Use "now"
Grab the current timestamp with one click.
Common use cases
Debug a log timestamp
Convert a raw Unix timestamp from a server log into a readable date.
Build an API request
Get the current or a specific Unix timestamp for an API parameter.
Check a token's expiry
Convert a JWT's exp claim (a Unix timestamp) into a readable date to see when it expires.
Frequently asked questions
Unix timestamps are traditionally in seconds since January 1, 1970 UTC, but many JavaScript APIs (like Date.now()) use milliseconds. Use the unit toggle to match whichever your source uses.