Hours to Seconds Conversion

Enter the time in hours below to get the value converted to seconds.

SWAP UNITS
Results in Seconds:
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1 hr = 3,600 sec
Do you want to convert seconds to hours?

How to Convert Hours to Seconds

conversion scale showing hours and equivalent seconds time values

To convert a hour measurement to a second measurement, multiply the time by the conversion ratio. One hour is equal to 3,600 seconds, so use this simple formula to convert:

seconds = hours × 3,600

The time in seconds is equal to the hours multiplied by 3,600.

For example, here's how to convert 5 hours to seconds using the formula above.
5 hr = (5 × 3,600) = 18,000 sec

Hours and seconds are both units used to measure time. Keep reading to learn more about each unit of measure.

Hours

The hour is a period of time equal to 1/24 of a day or 60 minutes.

The hour is an SI accepted unit for time for use with the metric system. Hours can be abbreviated as hr, for example 1 hour can be written as 1 hr.

Seconds

The second has historically been defined as 1/60 of a minute or 1/86,400 of a day. According the to SI definition, the second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the unperturbed ground state of the caesium 133 atom.[1]

The second is the SI base unit for time in the metric system. Seconds can be abbreviated as sec, for example 1 second can be written as 1 sec.

Hour to Second Conversion Table

Hour measurements converted to seconds
Hours Seconds
0.001 hr 3.6 sec
0.002 hr 7.2 sec
0.003 hr 10.8 sec
0.004 hr 14.4 sec
0.005 hr 18 sec
0.006 hr 21.6 sec
0.007 hr 25.2 sec
0.008 hr 28.8 sec
0.009 hr 32.4 sec
0.01 hr 36 sec
0.02 hr 72 sec
0.03 hr 108 sec
0.04 hr 144 sec
0.05 hr 180 sec
0.06 hr 216 sec
0.07 hr 252 sec
0.08 hr 288 sec
0.09 hr 324 sec
0.1 hr 360 sec
0.2 hr 720 sec
0.3 hr 1,080 sec
0.4 hr 1,440 sec
0.5 hr 1,800 sec
0.6 hr 2,160 sec
0.7 hr 2,520 sec
0.8 hr 2,880 sec
0.9 hr 3,240 sec
1 hr 3,600 sec

References

  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9.pdf