Unix Timestamp Converter

Turn epoch timestamps into readable dates — and any date back into a timestamp.

Current Unix time:

Timestamp → date

Date → timestamp

🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.

How it works

Unix time (also called epoch time) counts the seconds since 1 January 1970 UTC. It's the standard way computers store instants, because it's just a number — but that number is meaningless to humans. This converter translates in both directions so you can debug logs, database fields, and API responses quickly.

Paste a timestamp into the first field and see it as your local time, UTC, and ISO 8601. The tool auto-detects seconds versus milliseconds by length, so both common formats work. Below, pick a date and time to get the matching timestamp in seconds and milliseconds. A live clock shows the current epoch, and the "Use now" button drops it straight in.

All conversion happens in your browser using its own timezone for the local display, so nothing is uploaded.

Examples

1755060000 → a readable local and UTC date.

Pick a date → get its timestamp in seconds and milliseconds.

13-digit value like 1755060000000 → auto-read as milliseconds.

Frequently asked questions

Seconds or milliseconds — which does it expect?

Either. It auto-detects: 13-digit (or longer) values are treated as milliseconds, shorter values as seconds.

Which timezone is the 'local' time?

Your browser's own timezone. The UTC and ISO lines are timezone-independent.

Can it handle dates before 1970?

Yes — negative timestamps represent dates before the epoch and are converted correctly.

Is anything sent to a server?

No — all conversion happens in your browser.