How to convert hours to seconds
Hours and Seconds both measure time, so converting is a single multiplication. One h equals 3,600 s, so you multiply your hours value by 3,600.
Formula: seconds = hours × 3,600. For example, 10 h = 36,000 s.
Hours to Seconds conversion table
| Hours (h) | Seconds (s) |
|---|---|
| 1 | 3,600 |
| 2 | 7,200 |
| 5 | 18,000 |
| 10 | 36,000 |
| 25 | 90,000 |
| 50 | 180,000 |
| 100 | 360,000 |
| 1,000 | 3,600,000 |
Hours and Seconds explained
Hours (h): Sixty minutes (3,600 seconds).
Seconds (s): The SI base unit of time.
When you'd convert hours to seconds
You'll convert hours to seconds whenever a measurement is given in one unit but you need it in the other — comparing hours and seconds figures across regions, following a recipe or spec, or double-checking a number. Because 1 h is exactly 3,600 s, the result is precise every time.
Frequently asked questions
How many seconds are in a hour?
One h equals 3,600 s. Multiply your hours figure by 3,600 to get seconds.
What is the formula to convert hours to seconds?
seconds = hours × 3,600. The factor 3,600 is exact.
What is 2 hours in seconds?
2 h = 7,200 s. You can enter any value in the converter above to get an instant result.
Is this Hours to Seconds converter accurate?
Yes. It uses the standard conversion factor (1 h = 3,600 s) defined by BIPM — SI Brochure (definition of the second), so results are exact to several decimal places.