Use this free, accurate coulomb to milliampere-hour (mah) calculator to convert between Coulomb (C) and Milliampere-hour (mAh) (mAh). Includes live instant results, complete mathematical formulas, conversion tables, and step-by-step examples.
0.2777777778 Milliampere-hour
1 C is equal to 0.277778 mAh.
mAh = C × 0.27777778
electric-charge Converters
To convert from Coulomb to Milliampere-hour (mAh), multiply the value in Coulomb by 0.277778 (or use the formula: mAh = C × 0.277778).
Take your initial measurement in Coulomb (C). For instance, let's convert 1 C.
Multiply by the standard conversion factor (0.277778).
The final converted measurement equals 0.277778 Milliampere-hour (mAh) (mAh).
Compare standard reference values and common conversion benchmarks.
| Coulomb (C) | Milliampere-hour (mAh) (mAh) | Action |
|---|---|---|
| 1 C | 0.27778 mAh | |
| 2 C | 0.55556 mAh | |
| 3 C | 0.83333 mAh | |
| 5 C | 1.38889 mAh | |
| 10 C | 2.77778 mAh | |
| 15 C | 4.16667 mAh | |
| 20 C | 5.55556 mAh | |
| 25 C | 6.94444 mAh | |
| 50 C | 13.88889 mAh | |
| 75 C | 20.83333 mAh | |
| 100 C | 27.77778 mAh | |
| 250 C | 69.44444 mAh | |
| 500 C | 138.88889 mAh | |
| 1000 C | 277.77778 mAh |
Official standards, measurement systems, and real-world everyday applications.
A coulomb is the SI base derived unit of electric charge, equal to the charge transferred by a constant current of one ampere in one second (1 A·s).
Common Practical Uses
A milliampere-hour is a unit of electric charge equal to 3.6 coulombs, universally used to rate consumer battery capacity.
Common Practical Uses
Calculate from Milliampere-hour (mAh) (mAh) back to Coulomb (C).
Frequently used unit conversions in this category:
Explore other measurement and calculation tools:
There are 0.277778 milliampere-hours in 1 coulombs. Exactly 1 C is equal to 0.277778 mAh.
The conversion formula is: Milliampere-hour (mAh) = mAh = C × 0.27777778. Applying this to 1 C gives: 1 × 0.277778 = 0.277778 mAh.
To convert in reverse from milliampere-hours to coulombs, multiply by the inverse factor: 1 mAh = 3.6 C. Alternatively, divide your Milliampere-hour (mAh) amount by 0.277778.
To calculate in your head, round the conversion multiplier (0.28) to the nearest easy whole or decimal number.
Coulomb (C) belongs to the Metric (SI) system, commonly used in Electrostatics, Capacitor charge storage (Q = CV), Physics formulas. In comparison, Milliampere-hour (mAh) (mAh) is part of the Battery / Electronics system, frequently applied in Smartphone batteries (e.g. 5000 mAh), Power banks, Drone batteries.
Key milestones include: 1 C = 0.277778 mAh, 5 C = 1.3889 mAh, 10 C = 2.7778 mAh, 50 C = 13.8889 mAh, and 100 C = 27.7778 mAh.