Unix timestamp converter
Turn a Unix/epoch timestamp into a human date — local time, UTC, ISO 8601 and a relative “x ago” — or turn a date into its timestamp in seconds and milliseconds. The current epoch ticks live. Fully offline.
Open Unix timestamp converter →What is the Unix timestamp converter?
A tool that turns a Unix (epoch) timestamp into a human-readable date — in local time, UTC, ISO 8601 and a relative "x ago" — or converts a date into its timestamp in seconds and milliseconds. The current epoch ticks live. It runs entirely in your browser and works offline.
How to use Unix timestamp converter
- Convert a timestamp to a date — Type a Unix timestamp into the Timestamp to date field. Seconds and milliseconds are auto-detected, and it confirms which it read.
- Read the results — See the moment as local time, UTC, ISO 8601 and a relative phrase like "3 days ago".
- Convert a date to a timestamp — Pick a date and time in your local zone in the Date to timestamp field.
- Grab the epoch — Read the timestamp in both seconds and milliseconds, or use the live current epoch shown at the top — press Use now to drop it into the converter.
Frequently asked questions
Does it tell seconds from milliseconds?
Yes. The converter auto-detects whether your number is in seconds or milliseconds and shows which one it used.
What's a Unix timestamp?
It's the number of seconds (or milliseconds) since 1 January 1970 UTC, known as the epoch — a compact, timezone-free way to store a moment in time.
Which time zone are dates shown in?
Timestamps are shown in your local time and in UTC, plus ISO 8601 and a relative "x ago". Dates you enter are read in your local zone.
What is the live number at the top?
It's the current Unix time in seconds, ticking every second. Press Use now to copy it into the timestamp field.
Is anything sent to a server?
No. All conversions happen in your browser, so nothing is uploaded and the tool keeps working offline.
Tips
- Press Use now to capture the current epoch and convert it instantly.
- ISO 8601 output is ideal for logs, APIs and databases that expect a standard date string.
- Paste a millisecond timestamp straight in — there's no need to strip the last three digits.