Convert mAh (milliamphours) to time in hours

To calculate how many hours a certain mAh lasts, you have two options:

Option A) Enter the mAh and the Amps below and then click on the "Calculate hours" button:

mAh:

Amps:

Hours

The formula is (mAh)/(Amps*1000) = (Hours). For example, if you have a 3000 mAh battery that runs at 0.2 Amps (0.2Amps = 200mA), then the time that the battery will last for is (3000)/(0.2*1000) = (3000)/(200)= 15 Hours.

Option B) Enter the mAh, the Volts and the Watts below, and click on the button to calculate the hours:

mAh:

Volts:

Watts:

Hours

If you have voltage and watts, then the formula is (mAh*Volts)/(Watts*1000) = (Hours). For example, if you have a 3000 mAh battery that runs at 5 Volts and 15 Watts, then the time that the battery will last for is (3000*5)/(15*1000) = 1 Hours.

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