Coulombs Converter Calculator
Convert electric charge between coulombs (C), milli/µ/nano-coulombs, and ampere-hours (Ah↔C) instantly with this fast, accurate Coulombs Converter.

ampere hour to coulomb:
The Coulombs Converter instantly converts electric charge between coulombs, milli/u/nano-coulombs, and ampere-hours. Using q = I x t and 1Ah=3600C, it delivers fast, precise results for labs and engineering. Convert charge instantly between C, mC, µC, nC, and Ah. Based on q = I × t with exact SI prefixes and 1 Ah = 3600 C, the tool ensures accurate, lab-ready outputs.
Formula & Table Summary:
q = I × t (C = A × s)
1 C = 1000 mC = 10^6 µC = 10^9 nC
1 mC = 10^-3 C
,1 µC = 10^-6 C
,1 nC = 10^-9 C
1 Ah = 3600 C
,1 mAh = 3.6 C
coulombs converter online
A Coulombs Converter is a fast, portable tool for converting among the units coulomb (C), milli-coulomb (mC), micro-coulomb (uC), nano-coulomb (nC), and ampere-hour (Ah). Electric charge is the amount of electricity and is the basic concept in electronics, physics, and engineering. The SI unit is the coulomb (C), defined in terms of current and time: q = I x t. Typical applications are to convert sensor values (uC), discharge capacitor values (mC), electrostatic measurements (nC), or battery charge values (Ah) into coulombs for evaluation. This converter uses precision factors to remove manual math: 1Ah = 3600C. It is a valuable tool for students performing circuit problems, engineers sizing components, and researchers comparing measurements between instruments. With a simple input/output workflow and accurate constants, the Coulombs Converter saves time, prevents errors, and is ideal for use in labs, classrooms, and technical documentation.
Sample Input → Output
Input | From Unit | Conversion | To Unit | Output |
---|---|---|---|---|
1 | C | × 1000 | mC | 1000 |
750 | µC | × 10^-6 | C | 0.00075 |
25,000 | nC | × 10^-9 | C | 0.000025 |
1.5 | Ah | × 3600 | C | 5400 |
500 | mAh | × 3.6 | C | 1800 |
Frequently Asked Questions - Coulombs Converter Calculator:
What is a coulomb (C)?
The SI unit of electric charge; one coulomb equals one ampere-second.
How do I convert Ah to C?
Multiply ampere-hours by 3600. Example: 2 Ah = 7200 C.
How many microcoulombs in a coulomb?
1 C = 1,000,000 µC.
How do I convert mC to C?
Multiply mC by 1e-3. Example: 5 mC = 0.005 C.
What does µC mean?
Microcoulomb, equal to 10^-6 coulombs.
Convert nC to C quickly?
Multiply nC by 1e-9. Example: 20,000 nC = 2e-5 C.
What is the relationship q = I × t?
Charge equals current times time; C = A × s.
Can I convert mAh to coulombs?
Yes. 1 mAh = 3.6 C.
Why use a Coulombs Converter?
It gives instant, accurate unit changes for labs, circuits, and batteries.
Does it support SI prefixes?
Yes—mC, µC, nC, and more.
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