hours to seconds converter

1 hour equals 3,600 seconds. Conversions use s = h × 3600

h → 3,600 s

s = h × 3600

Converter

Worked examples

1 h = 3,600 s
2 h = 7,200 s
5 h = 18,000 s
10 h = 36,000 s
100 h = 360,000 s

hours to seconds conversion table

h	s	Arithmetic
1 h	3,600 s	× 3600
2 h	7,200 s	× 3600
3 h	10,800 s	× 3600
4 h	14,400 s	× 3600
5 h	18,000 s	× 3600
6 h	21,600 s	× 3600
8 h	28,800 s	× 3600
10 h	36,000 s	× 3600
12 h	43,200 s	× 3600
15 h	54,000 s	× 3600
20 h	72,000 s	× 3600
25 h	90,000 s	× 3600
30 h	108,000 s	× 3600
40 h	144,000 s	× 3600
50 h	180,000 s	× 3600
60 h	216,000 s	× 3600
70 h	252,000 s	× 3600
80 h	288,000 s	× 3600
90 h	324,000 s	× 3600
100 h	360,000 s	× 3600

How to convert h to s

Take your value in hours.
Multiply by 3600
That is your answer in seconds — no rounding needed until you choose a display precision.

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Questions

How many seconds in 1 hour?

Exactly 3,600 s. The factor follows from the definitions of both units, not from a measurement, so it is exact.

How do I convert h to s?

Multiply the hours figure by 3600 — or use the converter above, which updates as you type.

Is h to s the same as s to h?

No — they are inverses. One h is 3,600 s, while one s is 0.0002777778 h.

What is 1 h in s?

1 h = 3,600 s (see the value page for the full arithmetic).