Convert Hours to Seconds
1 hour = 3,600 seconds. Type any value below to convert in either direction — the calculation happens in your browser.
Hours to Seconds formula
Multiply the number of hours by 3600 to get seconds.
seconds = hours × 3600To go the other way: divide the number of seconds by 3600, or multiply by 0.0002777778.
hours = seconds ÷ 3600Hours to Seconds conversion table
| Hours | Seconds |
|---|---|
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 3 h | 10,800 s |
| 4 h | 14,400 s |
| 5 h | 18,000 s |
| 6 h | 21,600 s |
| 7 h | 25,200 s |
| 8 h | 28,800 s |
| 9 h | 32,400 s |
| 10 h | 36,000 s |
| 15 h | 54,000 s |
| 20 h | 72,000 s |
| 25 h | 90,000 s |
| 30 h | 108,000 s |
| 40 h | 144,000 s |
| 50 h | 180,000 s |
| 75 h | 270,000 s |
| 100 h | 360,000 s |
| 250 h | 900,000 s |
| 500 h | 1,800,000 s |
| 1,000 h | 3,600,000 s |
Seconds to Hours conversion table
| Seconds | Hours |
|---|---|
| 1 s | 0.0002777778 h |
| 2 s | 0.0005555556 h |
| 3 s | 0.0008333333 h |
| 4 s | 0.001111111 h |
| 5 s | 0.001388889 h |
| 6 s | 0.001666667 h |
| 7 s | 0.001944444 h |
| 8 s | 0.002222222 h |
| 9 s | 0.0025 h |
| 10 s | 0.002777778 h |
About the hour
An hour is 60 minutes, or 3,600 seconds — one twenty-fourth of a day.
About the second
The second is the SI base unit of time, defined by the caesium-133 hyperfine transition frequency.
Frequently asked questions
How many seconds are in a hour?
There are 3,600 seconds in one hour.
How many hours are in a second?
There are 0.0002777778 hours in one second.
Is this conversion exact?
The ratio between the hour and the second is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 hours in seconds?
10 hours equals 36,000 seconds.