Hours to Seconds converter

To convert hours to seconds, enter the value in the first field. The result in seconds is calculated automatically using the exact conversion factor.

1 h = 3600 s
1 s ≈ 0.000277777777778 h

Formula: s = h × 3600
h ≈ s × 0.000277777777778

Definitions: 1 h = 60 min

The hour (h) is 60 minutes, or 3,600 seconds. It is used for working time, travel, battery life and in speeds such as kilometers per hour.

The second (s) is the SI base unit of time, defined by 9,192,631,770 cycles of the radiation of the cesium-133 atom. All other time units used in science and engineering are built on it.

See the conversion table with commonly used values, handy for quick reference or study.