Unix Timestamp Converter
Free Unix timestamp converter. Turn epoch seconds or milliseconds into dates in any time zone and dates back into timestamps, with a live clock. Private, local.
- No upload — 100% private
- Instant, on your device
- Free, no sign-up
- Works offline once loaded
How it works
How to use Unix Timestamp Converter
See the current Unix time ticking live in seconds and milliseconds.
Paste a timestamp — seconds, milliseconds, microseconds or nanoseconds are detected automatically.
Pick a time zone to view the date there, alongside UTC, ISO 8601 and relative time.
To go the other way, choose a date and time and copy its Unix timestamp.
Why use it
Why use our Unix Timestamp Converter tool
Live epoch clock
Current Unix time in seconds and milliseconds, updating continuously with one-click copy.
Auto-detects units
Recognises 10-digit seconds, 13-digit milliseconds, and micro- or nanosecond values.
Every time zone
Choose from all IANA time zones with correct daylight-saving offsets.
Many formats
Local, UTC, ISO 8601 with offset and human-friendly relative time like '3 hours ago'.
Date → timestamp
Convert any wall-clock date and time in a chosen zone to seconds and milliseconds.
FAQ
Frequently asked questions
What is a Unix timestamp?
It's the number of seconds since 00:00:00 UTC on 1 January 1970 (the Unix epoch), not counting leap seconds. It's the same everywhere in the world at a given moment.
How can I tell seconds from milliseconds?
Current timestamps in seconds have 10 digits (e.g. 1735689600); in milliseconds they have 13. The converter detects this automatically, or you can pick the unit.
Do Unix timestamps depend on time zone?
No. A timestamp is an absolute instant. Time zones only affect how that instant is displayed as a local date and time.
What is the year 2038 problem?
Systems storing Unix time as a signed 32-bit integer overflow on 19 January 2038 at 03:14:07 UTC. Modern 64-bit systems and JavaScript are not affected.
How are daylight-saving changes handled?
Offsets come from your browser's time zone database. Times skipped when clocks spring forward move to the next valid time; repeated times use the earlier occurrence.
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