Hours to Seconds Converter
Convert hours (h) to seconds (s), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a length of time, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 h = 3600 s
- 1 × 3600 = 3600 s
How to convert hours to seconds
1 h = 3,600 s, so multiply by 3,600 to go from hours to seconds. Going the other way, 1 s = 0.000277777777778 h.
s = h × 3,600 h = s × 0.000277777777778
Worked example:
1 h = 3600 s 5 × 3600 = 18000 s
Hours to seconds 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 |
| 1000 h | 3,600,000 s |
About the units
- Hours (h)
- Hours, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).
- Seconds (s)
- Seconds, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).