## wattage calculator

Our Wattage Calculator is an easy-to-use tool that helps you to quickly convert mAh to Watt Hours (Wh) and Watt Hours to mAh. This calculator allows you to input the milliamp hour (mAh) and voltage (V) of your battery, and it will calculate the Watt hours (Wh) or milliamp-hours (mAh) of your battery.

## Convert mAh to Watt Hours

Insert milliamp hour (mAh) and voltage (V) and click on Calculate to obtain Watt hours (Wh).
mAh
V
Wh
Formula is (mAh)*(V)/1000 = (Wh). For example, if you have a 300mAh battery rated at 5V, the power is 300mAh * 5V / 1000 = 1.5Wh.

## Convert Watt Hours to mAh

Insert Watts-hour (Wh) and voltage (V) and click on Calculate to obtain milliamp-hours (mAh).
Wh
V
mAh
Formula is (Wh)*1000/(V) =(mAh). For example, if you have a 1.5Wh battery rated at 5V, the power is 1.5Wh * 1000 / 5V = 300mAh.
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