mAh to Wh conversion calculator

Electric charge in milliamp-hours (mAh) to energy in Watt-hours (Wh) calculator.

Enter the electric charge in milliamp-hours (mAh) and voltage in volts (V) and press the Calculate button:

Enter charge in milliamp-hours: mAh
Enter voltage in volts: V
Energy result in watt-hours: Wh

Wh to mAh calculator ►

milliamp-hours to watt-hours calculation

So The energy E(Wh) in watt-hours is equal to the electric charge Q(mAh) in milliamp-hours times the voltage V(V) in volts (V) divided by [1000].

E(Wh) = Q(mAh) × V(V) / 1000

So watt-hours is equal to milliamp-hours times volts divided by 1000:

watt-hours = milliamp-hours × volts / 1000


Wh = mAh × V / 1000

Example: 1

Calculate the Watts Hours of a battery having 100Mah and 5V?


Watt Hour = ( 100 × 5 ) / 1000
= 0.5Wh

Example: 2

Calculate the Watts Hours of a battery having 500Mah and 5V?


Watt Hour = ( 500 × 5 ) / 1000
= 2.5Wh

Example: 3

Calculate the Watts Hours of a battery having 5000Mah and 5V?


Watt Hour = ( 500 × 5 ) / 1000
= 25Wh

Example: 4

Calculate the Watts Hours of a battery having 10000Mah and 5V?


Watt Hour = ( 10000 × 5 ) / 1000
= 50Wh


Milliamp-Hours to Watt-Hours Conversion Chart

Table showing milliamp-hour converted to watt hours for common battery sizes
Battery SizeCapacity (mAh)Energy (Wh)Voltage (V)
AA2,700 mAh4.05 Wh1.5 V
AAA1,200 mAh1.8 Wh1.5 V
AAAA625 mAh0.9375 Wh1.5 V
C8,000 mAh12 Wh1.5 V
D12,000 mAh18 Wh1.5 V
9V565 mAh5.085 Wh9 V



Wh to mAh calculator ►


See also

Features of mAh to Wh conversion

Our mAh to Wh conversion allows the users to Calculate mAh to Wh. Some of the prominent features of this utility are explained below.

No Registration

You don’t need to go through any registration process to use the mAh to Wh converter. Using this utility, you can convert mAh to Wh as many times as you want for free.

Fast conversion

This mAh to Wh Calculator offers users the fastest conversion. Once the user enters the  mAh to Wh values ​​in the input field and clicks the Convert button, the utility will start the conversion process and return the results immediately.

Saves Time and Effort

The manual procedure of Calculator mAh to Wh isn’t an easy task. You must spend a lot of time and effort to complete this task. The mAh to Wh Calculator allows you to complete the same task immediately. You will not be asked to follow manual procedures, as its automated algorithms will do the work for you.


Despite investing time and effort in manual Calculation, you might not be able to get your hands on accurate results. Not everyone is good at solving math problems, even if you think you're a pro, there's still a good chance you'll get in accurate results. This situation can be smartly handled with the help of a mAh to Wh Calculator. You will be provided with 100% accurate results by this online tool.


The online mAh to Wh converter perfectly works on all operating systems. Whether you have a Mac, iOS, Android, Windows, or Linux device, you can easily use this online Tool without facing any hassle.

100% Free

You don't need to go through any registration process to use this mAh to Wh Calculator. You can use this utility for free and do unlimited mAh to Wh conversions without any limitations.


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