Hours to Seconds Converter
Convert hours (h) to seconds (s) instantly. Time conversions help with project planning, payroll hours and working out how long a loan or COE period really is.
Result
- Seconds
- 3,600 s
How to use the hours to seconds converter
- Enter the hours (h).
- The results update as you type, or press Calculate.
- Read the seconds first, then the supporting figures below it.
Formula
Seconds = hours × 3,600
Worked example
For example, with these inputs:
- Hours (h): 1
the calculator returns:
- Seconds: 3,600 s
Hours to Seconds table
| Hours | Seconds |
|---|---|
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 5 h | 18,000 s |
| 10 h | 36,000 s |
| 20 h | 72,000 s |
| 25 h | 90,000 s |
| 50 h | 180,000 s |
| 100 h | 360,000 s |
| 250 h | 900,000 s |
| 500 h | 1,800,000 s |
| 1,000 h | 3,600,000 s |
About this conversion
Time conversions help with project planning, payroll hours and working out how long a loan or COE period really is.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many seconds are in one hour?
1 h = 3,600 s.
How do I convert h to s?
Seconds = hours × 3,600.