Convert coulombs to mah
1 coulomb equals 0.27777778 milliampere-hours. Enter a value below to convert instantly.
Multiply the number of coulombs by 0.277777777778 to get milliampere-hours. How this is calculated
Need the other direction? Convert milliampere-hour to coulomb →
Formula
Multiply the number of coulombs by 0.277777777778 to get milliampere-hours.
Step by step
- Start with 1 C.
- Multiply by the conversion factor 0.277777777778.
- 1 × 0.277777777778 = 0.27777778 mA·h.
Coulombs to Milliampere-hours conversion table
| Coulombs (C) | Milliampere-hours (mA·h) |
|---|---|
| 1 | 0.27777778 |
| 2 | 0.55555556 |
| 5 | 1.3888889 |
| 10 | 2.7777778 |
| 20 | 5.5555556 |
| 50 | 13.888889 |
| 100 | 27.777778 |
| 500 | 138.88889 |
Convert Coulomb to other electric charge units
1 C expressed in every other electric charge unit on this site.
- Coulomb C 1
- Megacoulomb MC 0.000001
- Kilocoulomb kC 0.001
- Millicoulomb mC 1,000
- Microcoulomb µC 1,000,000
- Nanocoulomb nC 1,000,000,000
- Picocoulomb pC 1,000,000,000,000
- Ampere-hour A·h 0.00027777778
- Milliampere-hour mA·h 0.27777778
- Ampere-minute A·min 0.016666667
- Ampere-second A·s 1
- Abcoulomb abC 0.1
- Statcoulomb statC 2,997,924,500
- Faraday F 0.00001036427
- Elementary Charge e 6.2415091e+18
About the coulomb
The coulomb (C) is a SI unit of electric charge.
About the milliampere-hour
The milliampere-hour (mA·h) is a Other unit of electric charge. The capacity figure printed on phone and laptop batteries.
Where this conversion is used
Converting coulombs to milliampere-hours comes up when battery capacity, capacitor sizing, and electrochemistry. A milliampere-hour is a charge, not an energy — comparing batteries at different voltages needs watt-hours instead.
Related conversions
Frequently asked questions
How many milliampere-hours are in a coulomb?
One coulomb equals 0.27777778 milliampere-hours.
How do you convert coulombs to milliampere-hours?
Multiply the number of coulombs by 0.277777777778 to get milliampere-hours.
What is 1 milliampere-hour in coulombs?
One milliampere-hour equals 3.6 coulombs.
When would I convert coulombs to milliampere-hours?
This conversion is common when battery capacity, capacitor sizing, and electrochemistry.
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.