Convert Coulombs to Ampere-hours

Enter your coulomb value in the form below to get the value calculated in ampere-hours.

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Results in Ampere-hours:
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1 C = 0.000278 Ah

How to Convert Coulombs to Ampere-hours

Convert coulombs to ampere-hours with this simple formula:

ampere-hours = coulombs × 0.000278

Converting a coulomb electric charge measurement to an ampere-hour measurement involves multiplying the electric charge by the conversion ratio to find the result. One coulomb is equal to 0.000278 ampere-hours, so to convert simply multiply by 0.000278.

For example:
5 C = (5 × 0.000278) = 0.001389 Ah

Coulombs and ampere-hours are both units used to measure electric charge. Learn more about electric charge and find more electric charge measurement conversion calculators. Coulombs are an SI derived unit of electric charge and can be abbreviated as C, for example 1 C. Ampere-hours are an electric charge measurement and can be abbreviated as Ah, for example 1 Ah.

Convert Ampere-hours to Coulombs

Coulomb Measurements and Equivalent Ampere-hour Conversions

Common coulomb values converted to the equivalent ampere-hour value
Coulombs Ampere-hours
1 C 0.000278 Ah
2 C 0.000556 Ah
3 C 0.000833 Ah
4 C 0.001111 Ah
5 C 0.001389 Ah
6 C 0.001667 Ah
7 C 0.001944 Ah
8 C 0.002222 Ah
9 C 0.0025 Ah
10 C 0.002778 Ah
11 C 0.003056 Ah
12 C 0.003333 Ah
13 C 0.003611 Ah
14 C 0.003889 Ah
15 C 0.004167 Ah
16 C 0.004444 Ah
17 C 0.004722 Ah
18 C 0.005 Ah
19 C 0.005278 Ah
20 C 0.005556 Ah
21 C 0.005833 Ah
22 C 0.006111 Ah
23 C 0.006389 Ah
24 C 0.006667 Ah
25 C 0.006944 Ah
26 C 0.007222 Ah
27 C 0.0075 Ah
28 C 0.007778 Ah
29 C 0.008056 Ah
30 C 0.008333 Ah
31 C 0.008611 Ah
32 C 0.008889 Ah
33 C 0.009167 Ah
34 C 0.009444 Ah
35 C 0.009722 Ah
36 C 0.01 Ah
37 C 0.010278 Ah
38 C 0.010556 Ah
39 C 0.010833 Ah
40 C 0.011111 Ah

More Coulomb Electric Charge Conversions

Convert to Millicoulombs
1 C is equal to 1,000 millicoulombs
Convert to Microcoulombs
1 C is equal to 1,000,000 microcoulombs
Convert to Nanocoulombs
1 C is equal to 1,000,000,000 nanocoulombs
Convert to Picocoulombs
1 C is equal to 1,000,000,000,000 picocoulombs
Convert to Electron Charge
1 C is equal to 6,241,500,000,000,000,000 electron charge
Convert to Milliampere-hours
1 C is equal to 0.277778 milliampere-hours