Hours to Seconds
Convert Hours to Seconds with an exact factor. One hour equals 3,600 Seconds.
Result3,600
How to convert Hours to Seconds
The converter above changes Hours into Seconds instantly. As a reference point, one hour corresponds to 3,600 Seconds, and one second corresponds to 0.00027778 Hours. Use the table below for common values.
Hours × 3,600 = Seconds
For example, 5 Hours = 18,000 Seconds.
About the units
- Hours (h) — 60 minutes, or 3,600 seconds.
- Seconds (s) — The SI base unit of time.
Hours to Seconds conversion table
| Hours | Seconds |
|---|---|
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 3 h | 10,800 s |
| 5 h | 18,000 s |
| 10 h | 36,000 s |
| 15 h | 54,000 s |
| 20 h | 72,000 s |
| 30 h | 108,000 s |
| 45 h | 162,000 s |
| 60 h | 216,000 s |
| 90 h | 324,000 s |
| 120 h | 432,000 s |
Seconds to Hours conversion table
| Seconds | Hours |
|---|---|
| 1 s | 0.00027778 h |
| 2 s | 0.00055556 h |
| 3 s | 0.00083333 h |
| 5 s | 0.00138889 h |
| 10 s | 0.00277778 h |
| 15 s | 0.00416667 h |
| 20 s | 0.00555556 h |
| 30 s | 0.00833333 h |
| 45 s | 0.0125 h |
| 60 s | 0.01666667 h |
| 90 s | 0.025 h |
| 120 s | 0.03333333 h |
Frequently asked questions
How many Seconds is one hour?
One hour is 3,600 Seconds.
Are these time conversions accurate?
Yes. They use the exact standard unit definitions, so results are accurate to the number of decimals shown.
What is the formula to convert Hours to Seconds?
Multiply the number of Hours by 3,600. To convert back, multiply Seconds by 0.00027778.
This tool is provided for general information only. Verify important figures independently. · Last reviewed: August 25, 2026