coulombs to ampere hours calculator
Convert electric charge from coulombs (C) to ampere-hours (Ah) or mAh instantly using Ah = C ÷ 3600. Includes reverse conversion and battery capacity examples.
battery charge conversion
Quickly convert coulombs to ampere-hours: Ah = 3600C-1 and mAh = 3.6C-1. Back with C = Ah 3600. These are the definitions obtained directly out of charge = current x time.
Formula & Table Summary:
Ah = C ÷ 3600
mAh = C ÷ 3.6
C = Ah × 3600
c to mah calculator
The Coulombs to Ampere Hours Calculator is used to convert electric charge between coulombs (C), and ampere-hours (Ah/mAh). As 1 A = 1 C/s one amp-hour is the amount of charge transmitted per second by 1 ampere: 1 Ah = 3600 C. C will therefore be obtained by Ah 3600, and vice versa. In milliampere-hours, mAh = C/3.6. The conversions are needed in a battery sizing, capacity calculation, state-of-charge, and laboratory measurements. When converting sensor charge points into usable battery supply or when comparing power-bank ratings to the ideal, accurate conversion of C to Ah values is an essential stage in the design process of any electronic component or IoT, or energy storage project.
electrical charge to ah
| Coulombs (C) | Ampere-hours (Ah) | Milliampere-hours (mAh) |
|---|---|---|
| 1 | 0.000278 | 0.278 |
| 3,600 | 1.000 | 1,000 |
| 5,400 | 1.500 | 1,500 |
| 7,200 | 2.000 | 2,000 |
| 18,000 | 5.000 | 5,000 |
Frequently Asked Questions - coulombs to ampere hours calculator:
How do I convert coulombs to ampere-hours?
Use Ah = C ÷ 3600 and mAh = C ÷ 3.6.
How do I convert ampere-hours to coulombs?
Use C = Ah × 3600.
Why is 3600 used in the formula?
Because 1 hour = 3600 seconds and 1 A = 1 C/s.
What does 1 Ah represent?
The charge delivered by 1 ampere flowing for 1 hour, equal to 3600 coulombs.
When should I use mAh instead of Ah?
Use mAh for small batteries (phones, wearables) where capacities are fractional Ah.
Is the conversion affected by battery voltage?
No. Ah and C are charge units independent of voltage.
Does temperature change the conversion?
No. The unit conversion is fixed; temperature affects usable capacity, not the math.
Can I estimate remaining battery life from coulombs?
Yes, coulomb counting integrates current over time to estimate state of charge.
Is 1 mAh equal to 3.6 C?
Yes. 1 mAh × 3.6 = 3.6 C.
Are Ah and Wh the same?
No. Wh = Ah × Voltage; Ah is charge, Wh is energy.
