Time Unit Converter — Seconds, Minutes, Hours, Days, Weeks
The Time Unit Converter converts between all common units of time — nanoseconds, milliseconds, seconds, minutes, hours, days, weeks, months, and years. Whether you are calculating project durations, converting uptime metrics, or working on scientific calculations, this free converter handles every time conversion instantly.
Frequently Asked Questions
1 day = 24 hours × 60 minutes × 60 seconds = 86,400 seconds. In a leap year, one day (Feb 29) is added, giving 366 × 86,400 = 31,622,400 seconds in that year.