1 hour = 3600 seconds
Convert hours to seconds.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
s = h × 3600
Worked through with a real value: 10 hours = 36000 seconds.
Going the other way: h = s × 0.000277778, so 1 second = 0.000277778 hours.
What each unit is
- hour h
- Sixty minutes, the everyday unit for schedules, appointments and travel time.
- second s
- The SI base unit of time, defined since 1967 as 9,192,631,770 cycles of cesium-133 radiation.
Conversion tables
| hours (h) | seconds (s) |
|---|---|
| 1 | 3600 |
| 2 | 7200 |
| 3 | 10800 |
| 4 | 14400 |
| 5 | 18000 |
| 6 | 21600 |
| 7 | 25200 |
| 8 | 28800 |
| 9 | 32400 |
| 10 | 36000 |
| 20 | 72000 |
| 25 | 90000 |
| 50 | 180000 |
| 75 | 270000 |
| 100 | 360000 |
| seconds (s) | hours (h) |
|---|---|
| 1 | 0.000277778 |
| 2 | 0.000555556 |
| 3 | 0.000833333 |
| 4 | 0.00111111 |
| 5 | 0.00138889 |
| 6 | 0.00166667 |
| 7 | 0.00194444 |
| 8 | 0.00222222 |
| 9 | 0.0025 |
| 10 | 0.00277778 |
| 20 | 0.00555556 |
| 25 | 0.00694444 |
| 50 | 0.0138889 |
| 75 | 0.0208333 |
| 100 | 0.0277778 |
Questions
How many seconds are in a hour?
1 hour = 3600 seconds.
How do I convert hours to seconds?
Use s = h × 3600. For example, 10 hours = 36000 seconds.
How many hours are in one second?
1 second = 0.000277778 hours.
What is 10 hours in seconds?
10 hours = 36000 seconds.
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