Coulombs to Ampere-hours Converter
Convert coulombs (C) to ampere-hours (Ah)
Result
0.000277777778 Ah
Ampere-hours
1 C = 0.000277777778 Ah
1 C in other units
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How to convert coulombs to ampere-hours
There are 3,600 coulombs in one ampere-hour, so divide the number of coulombs by 3,600.
Ah = C ÷ 3,600
1 C = 0.0002777778 Ah · 1 Ah = 3,600 C
Worked example
To convert 5 coulombs to ampere-hours: 5 C ÷ 3,600 = 0.001388889 Ah.
About coulombs (C)
The coulomb is the SI unit of charge: one ampere flowing for one second.
About ampere-hours (Ah)
An ampere-hour is one ampere for one hour (3,600 C). Inverter and car batteries are rated in Ah.
More conversions
Coulombs to other units
Frequently asked questions
How many ampere-hours are in one coulomb?
One coulomb equals 0.0002777778 ampere-hours.
How many coulombs are in one ampere-hour?
One ampere-hour equals 3,600 coulombs.
How do I convert coulombs to ampere-hours?
Use the formula Ah = C ÷ 3,600. For example, 5 C ÷ 3,600 = 0.001388889 Ah.