Convert hours to seconds
1 hour equals 3600 seconds. Type any number below — the other side updates instantly.
Hours to seconds — quick reference
| hours | seconds |
|---|---|
| 0.1 hr | 360 s |
| 0.25 hr | 900 s |
| 0.5 hr | 1800 s |
| 1 hr | 3600 s |
| 1.5 hr | 5400 s |
| 2 hr | 7200 s |
| 3 hr | 10800 s |
| 5 hr | 18000 s |
| 8 hr | 28800 s |
| 12 hr | 43200 s |
| 24 hr | 86400 s |
| 48 hr | 172800 s |
How to convert
Multiply the number of hours by 3600 to get seconds. To go the other way, multiply seconds by 0.000278 to get hours. The conversion factor is fixed and exact, so you can use this on any value.
Frequently asked
- How many seconds are in 1 hour?
- 1 hour = 3600 seconds.
- How do you convert hours to seconds?
- Multiply the number of hours by 3600 to get seconds. To go the other way, multiply seconds by 0.000278 to get hours. The conversion factor is fixed and exact, so you can use this on any value.
- What is 3 hours in seconds?
- 3 hours = 10800 seconds.
Convert hours to other time units
Convert other time units to seconds
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