Select a time unit, enter the value, and choose the target unit. Use the Duration tab to break down a total number of seconds or minutes into hours, minutes, and seconds — useful for countdowns and race times.
Frequently Asked Questions
How many seconds are in a day?
There are 86,400 seconds in one day (24 hours × 60 minutes × 60 seconds).
How many hours are in a year?
A common year has 8,760 hours. A leap year has 8,784 hours.
How many weeks are in a year?
A year has 52 weeks and 1 day (or 2 days in a leap year).