mAh to Wh Calculator


Both mAh and Wh are useful units for calculating the amount of energy that is received by the system from the source.

  • mAh is used to indicate the rating of the battery as well as the amount of charge that is stored in the battery and
  • Wh is used to indicate the amount of energy that is consumed by the equipment.

mAh to Wh calculator that can convert milliampere-hours (mAh) and voltage measured in volts to watt-hours (Wh).

E = Q x V / 1000

Wh = mAh x V / 1000

In the boxes below, enter the milliamp hour (mAh) and voltage (V):

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Rabert T
As an electrical engineer with 5 years of experience, I focus on transformer and circuit breaker reliability in 110/33-11kV and 33/11kV substations. I am a professional electrical engineer with experience in transformer service and maintenance. I understand electrical principles and have expertise troubleshooting, repairing, and maintaining transformers, circuit breakers, and testing them.