Time Unit Converter
Choose a fixed duration unit, enter a finite amount, and select how a year should be represented.
A QUICK WALKTHROUGH
How to use this tool
- Enter a finite nonnegative amount and choose its unit.
- Choose 365 days or the 365.2425-day mean tropical year convention.
- Convert and read the equivalent fixed durations.
Fixed duration units
Seconds, minutes, hours, and days are elapsed durations: 60 seconds per minute, 60 minutes per hour, and 24 hours per day.
Selectable year convention
A year is not a calendar date interval. Choose exactly 365 days or the 365.2425-day mean tropical approximation; leap years, months, dates, and time zones are not inferred.
GOOD TO KNOW
Common questions
Does this calculate calendar dates?
No. It converts numeric durations only. Calendar dates and leap-day rules are outside the contract.
Which year convention should I use?
Use 365 days for a fixed business or planning duration, or 365.2425 days for the mean tropical-year approximation.
Are inputs sent anywhere?
No. The calculation runs locally in your browser.