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Ampere-hours to Coulombs

Type a value in Ampere-hours and get the result in Coulombs, calculated exactly.

1 Ah = 3,600 C Electric charge converter

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Precision

Exact factorThis result is exact.

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Formula

C = Ah × 3,600

To convert Ampere-hours to Coulombs, multiply the value by 3,600.

Worked examples

1 Ah × 3,600 = 3,600 C
3,000 Ah × 3,600 = 10,800,000 C
100 Ah × 3,600 = 360,000 C

This factor is exact by definition.

Conversion table

Ampere-hours to Coulombs
Ampere-hours (Ah)	Coulombs (C)
1	3,600
2	7,200
3	10,800
4	14,400
5	18,000
6	21,600
7	25,200
8	28,800
9	32,400
10	36,000
15	54,000
20	72,000
25	90,000
30	108,000
40	144,000
50	180,000
60	216,000
70	252,000
75	270,000
80	288,000
90	324,000
100	360,000

Values marked ≈ are rounded; the rest are exact.

Reverse table: Coulombs to Ampere-hours

Coulombs to Ampere-hours
Coulombs (C)	Ampere-hours (Ah)
1	≈ 0.0002777778
2	≈ 0.0005555556
3	≈ 0.0008333333
4	≈ 0.001111111
5	≈ 0.001388889
6	≈ 0.001666667
7	≈ 0.001944444
8	≈ 0.002222222
9	0.0025
10	≈ 0.002777778
15	≈ 0.004166667
20	≈ 0.005555556
25	≈ 0.006944444
30	≈ 0.008333333
40	≈ 0.01111111
50	≈ 0.01388889
60	≈ 0.01666667
70	≈ 0.01944444
75	≈ 0.02083333
80	≈ 0.02222222
90	0.025
100	≈ 0.02777778

Convert Coulombs to Ampere-hours

Unit definitions

Ampere-hours Ah: One ampere for one hour: exactly 3600 coulombs.
Coulombs C: The SI unit of charge: one ampere for one second.

Questions people ask

Ampere-hours to Coulombs: what is the conversion factor?

One Ah is 3,600 C.

How do I convert Ampere-hours to Coulombs?

Use the formula above. For example, 3,000 Ah = 10,800,000 C.

Is the conversion exact?

Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.

Factors checked 19 October 2026.