Battery Capacity Calculator

Convert battery energy to capacity in mAh.

Capacity (mAh) 10,000

Capacity (Ah) 10

Formula: mAh = Wh / V * 1000

Step-by-step with your numbers:

1. Values used:

2. Energy = 37 Wh

3. Voltage = 3.7 V

5. Capacity = 10,000mAh

6. Capacity = Energy / Voltage = 37 / 3.7 = 10Ah

Did we solve your problem today?

Battery capacity in mAh comes from its energy and voltage.

The math behind it

capacity (mAh) = energy (Wh) / voltage (V) x 1000.

37 Wh at 3.7 V is 10000 mAh.

Why compare in Wh?

mAh alone ignores voltage; watt-hours compare true energy across batteries.