Hour to Second

Convert hour to second instantly. Type in either field — results update live.

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Time Hour Second

1 hour = 3,600 seconds

From

Format

Selected h values converted to s using the exact factor from this tool.

Exact conversion factors in both directions, plus a worked example.

1 h = 3600 s

1 s = 0.0002777778 h

To convert hour to second, multiply by 3600.

To convert second to hour, multiply by 0.0002777778.

Example: convert 10 h to s

10 × 3600 = 36000 s

Short background on the units used in this conversion.

An hour is exactly 3,600 seconds — one twenty-fourth of a mean solar day in everyday use.

Hours bill work shifts, plan travel itineraries, and size battery runtime estimates.

The second is the SI base unit of time — defined by cesium atomic clock transitions since 1967.

Seconds time sports events, scientific experiments, and every digital clock and stopwatch.

How many seconds are in one hour?

One hour equals 3,600 seconds. Multiply your hours value by 3,600 to convert to seconds.

What is the conversion formula?

s = h × 3,600

The reverse is h = s × 0.0002777778, using the same exact factors as this converter.

Is this Hour to Second converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

Jump to any time conversion starting from hour — including the reverse direction and every other unit in our dataset.