Convert hours to seconds
Enter a hours value below and convert to seconds
hr
1 hour =
3600 seconds
* exact result
Select how many decimal places the result will be rounded to:
How to convert hours to seconds
To convert hours to seconds, multiply a hours value by 3600.
Formula s = hr × 3600
Example: Convert 24 hours to seconds Calculations: 24 hr × 3600 = 86400 s
Hour (hr)
The hour is a unit of time equal to 1/24 of a day, or 60 minutes.
Second (s)
The second is the base unit of time, originally defined as 1/86400 of a day. Nowadays, its definition is based on the physical properties of the caesium-133 atom.