Unix Timestamp Converter

Convert epoch timestamps in seconds, milliseconds, microseconds, or nanoseconds into readable local dates and UTC ISO strings. Everything runs in your browser.

Free, no sign-up, no uploads. Built for quick timestamp checks.
Paste a whole-number timestamp. Auto-detect uses digit length.
Detected Unit
Local Time
UTC ISO 8601
Seconds
Milliseconds
Microseconds
Nanoseconds

Timestamp conversion notes

Unix time counts elapsed time from January 1, 1970 at 00:00:00 UTC. APIs often use seconds or milliseconds, while logs and databases sometimes use microseconds or nanoseconds.

ISO 8601 Converter Time Zone Converter Date Format Converter

FAQ

Does this tool upload timestamps? No. It converts values locally in your browser.

Why do local and UTC outputs differ? They represent the same instant displayed in different time zones.