Timestamp Converter

Convert Unix timestamps to human-readable dates and back — local time, UTC, ISO 8601 and relative time.

Current Unix time

About Unix timestamps

A Unix timestamp counts the seconds elapsed since 1970-01-01T00:00:00Z (UTC), not counting leap seconds. JavaScript and many APIs use milliseconds instead, which is why you sometimes see 13-digit values. This converter auto-detects seconds vs milliseconds and shows the result in your local timezone, UTC and ISO 8601.

Everything runs locally in your browser — no data leaves your device.