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Battery Capacity Calculator

Convert battery energy to capacity in mAh.

Calculated Output

Capacity (mAh) 10,000

Capacity (Ah) 10

Formula: mAh = Wh / V * 1000

Step-by-Step Breakdown

1. Values used:

2. Energy = 37 Wh

3. Voltage = 3.7 V

5. Capacity = 10,000mAh

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

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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.