How Many Seconds Are in an Hour?
There are 3,600 seconds in an hour. To convert hours to seconds, multiply the number of hours by 3,600.
Common Hour-to-Second Conversions
| Hour | Second |
|---|---|
| 1 hour | 3,600 seconds |
| 2 hours | 7,200 seconds |
| 3 hours | 10,800 seconds |
| 4 hours | 14,400 seconds |
| 6 hours | 21,600 seconds |
| 8 hours | 28,800 seconds |
| 12 hours | 43,200 seconds |
| 24 hours | 86,400 seconds |
| 36 hours | 129,600 seconds |
| 48 hours | 172,800 seconds |
| 72 hours | 259,200 seconds |
How to Convert Hours to Seconds
Multiply the number of hours by 3,600 to convert to seconds. To go the other way, divide the number of seconds by 3,600. The calculator above does both directions automatically — type in either box.
Related Converters
- Time Converter — switch between all time units at once
- Minutes to Hours
- Hours in a Week
