Universal Time Unit Converter

Convert any amount of time between seconds, minutes, hours, days, weeks, and years.

Time gets measured in more units than almost any other kind of quantity — seconds, minutes, hours, days, weeks, years — and unlike converting between metric units of length or weight, which all scale by clean powers of ten, time conversions involve a mix of awkward multipliers: 60 seconds to a minute, 60 minutes to an hour, 24 hours to a day, 7 days to a week, and a year that isn't a round number of days at all once you account for leap years.

That irregularity is exactly why converting between time units in your head is more error-prone than it looks — there's no consistent pattern to lean on the way there is with metric units, so each conversion effectively has to be remembered or looked up separately, and chaining several together (like converting years directly into minutes) compounds the chance of a small arithmetic slip.

This tool handles any combination of those units directly and instantly: enter an amount, pick the unit you're converting from and to, and the result updates live — useful any time you need to compare durations expressed in different units, like reconciling a project estimate given in weeks against a deadline expressed in days.

1. Enter an amount.
2. Choose the unit to convert from and to.
3. The result updates instantly.