Convert hours to seconds
1 h = 3600 s — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
3600s
1 h = 3600 s
How to convert hours to seconds
Multiply the number of hours by 3600 to get seconds.
The exact factor is 3600 .
Hour to Second conversion table
| Hours (h) | Seconds (s) |
|---|---|
| 1 h | 3600 |
| 2 h | 7200 |
| 3 h | 10 800 |
| 5 h | 18 000 |
| 10 h | 36 000 |
| 20 h | 72 000 |
| 25 h | 90 000 |
| 50 h | 180 000 |
| 100 h | 360 000 |
| 250 h | 900 000 |
| 500 h | 1 800 000 |
| 1000 h | 3 600 000 |
Second to Hour conversion table
| Seconds (s) | Hours (h) |
|---|---|
| 1 s | 0.000 277 777 78 |
| 2 s | 0.000 555 555 56 |
| 3 s | 0.000 833 333 33 |
| 5 s | 0.001 388 888 9 |
| 10 s | 0.002 777 777 8 |
| 20 s | 0.005 555 555 6 |
| 25 s | 0.006 944 444 4 |
| 50 s | 0.013 888 889 |
| 100 s | 0.027 777 778 |
| 250 s | 0.069 444 444 |
| 500 s | 0.138 888 89 |
| 1000 s | 0.277 777 78 |
Frequently asked
How many seconds are in a hour?
One hour equals 3600 seconds (h → s). That figure is exact, not rounded.
How do you convert hours to seconds?
Multiply the number of hours by 3600 to get seconds.
What is 1 s in hours?
One second is 0.0002777777778 hours.
What is 10 h in s?
10 h = 36 000 s.