Time Converter
Convert seconds, minutes, hours, days, weeks and years with standard time constants.
Enter the amount of time and select the unit it is in, then choose the target unit. The result updates as you type.
All units are defined in seconds: 1 minute = 60 s, 1 hour = 3600 s, 1 day = 86400 s, 1 week = 604800 s, and 1 year = 31557600 s based on 365.25 days per year.
Use the swap button to reverse the direction, for example from hours to days and back.
Frequently asked questions
How many seconds are in an hour?
There are 3600 seconds in one hour: 60 seconds per minute times 60 minutes per hour.
How many days are in a year for this converter?
It uses 365.25 days per year, which is the Julian year average that includes leap years. That equals 31,557,600 seconds.
How many weeks are in a year?
A 365.25-day year contains about 52.1786 weeks. The converter computes this using the exact second-based factors.