Value, From, To
Waiting for input
How this calculator works
The second is the SI base unit of time, and every other unit here is an exact multiple of it. The year is taken as a common year of 365 days; an average Gregorian year is 365.2425 days, so multi-year figures can be off by about a day every four years.
Formula
- 1 minute = 60 s
- 1 hour = 3,600 s
- 1 day = 86,400 s
- 1 week = 604,800 s
- 1 year (365 days) = 31,536,000 s
Worked example
1 d to s
- Value
- 1
- From
- Day (d)
- To
- Second (s)
Result86,400 s
1 d = 86,400 s. 1 d = 86,400 s.
Frequently asked questions
How many seconds are in a day?
86,400: 24 hours × 60 minutes × 60 seconds.
How many hours are in a year?
8,760 in a 365-day year and 8,784 in a leap year.
How many minutes are in a week?
10,080: 7 days × 24 hours × 60 minutes.
Sources
More in Unit Converters
Results are estimates based on the values you enter and the published method shown above. They do not replace professional medical, financial or legal advice. Method reviewed October 7, 2026. About this site