Convert hours to seconds
Hours to seconds. Enter a value to convert, or use the hours to seconds chart further down the page.
1 hour equals 3,600 seconds. Going the other way, 1 second = 0.0002777777778 hours.
Note. Months and years are not fixed lengths. This converter uses the average Gregorian year of 365.2425 days and the average month of one twelfth of that.
How to convert hours to seconds
To convert hours to seconds, multiply the hour value by 3600. You can also divide by 0.0002777777778 to get the same answer.
s = h × 3600
Worked example
Convert 30 h to seconds:
30 h = 108,000 s
hours to seconds conversion chart
Use this hours to seconds table for quick reference without typing anything.
| hours (h) | seconds (s) |
|---|---|
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 5 h | 18,000 s |
| 10 h | 36,000 s |
| 15 h | 54,000 s |
| 30 h | 108,000 s |
| 45 h | 162,000 s |
| 60 h | 216,000 s |
| 100 h | 360,000 s |
| 1,000 h | 3,600,000 s |
What is a hour?
An hour is 60 minutes, or exactly 3,600 seconds — one twenty-fourth of a mean solar day.
What is a second?
The second is the SI base unit of time, defined by 9,192,631,770 periods of the radiation of the caesium-133 atom.
Frequently asked questions
How many seconds are in a hour?
1 hours equals 3,600 seconds. Going the other way, 1 seconds is 0.0002777777778 hours.
How do you convert hours to seconds?
To convert hours to seconds, multiply the hour value by 3600. You can also divide by 0.0002777777778 to get the same answer.
What is 10 hours in seconds?
10 hours equals 36,000 seconds. The conversion chart on this page lists the other values people look up most often.
Related time conversions
Convert hours to other units
- seconds to hours
- hours to minutes
- hours to days
- hours to weeks
- hours to months
- hours to years
- hours to milliseconds
Convert other units to seconds
- minutes to seconds
- days to seconds
- weeks to seconds
- months to seconds
- years to seconds
- milliseconds to seconds
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