Watt-hour (Wh) to Milliamp-hour (mAh) Conversion Calculator

Convert watt-hours to milliamp-hours using this electrical calculator. We also show the formulas for the Wh to mAh conversion. watt-hours to milliamp-hours formula. Convert watt hours to milliamp hours (Wh to mAh) with our conversion calculator. Quickly calculate the milliamp hours of a battery.

Wh To mAh Calculator

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Conversion using the Wh to mAh Formula

How to Calculate milliamp-hours mAh from watt-hours wh and Voltage volts using DC line current.

The Battery Capacity Q in milliamp-hours mAh is calculated as the 1000 times the energy E in watt-hours wh divided by the voltage in volts v. Plug these values into the formula:

mAh = Wh × 1000Volts

For Example, Let’s find the mAh of 120 Wh for a 12V battery.

milliamp hours(Q) = Watt hours(E) × 1000Voltage(V)

or, Q(mAh) = 120 wh × 100012 Volts

or, milliamp-hours = 10000 mAh

How to use Wh to mAh Calculator?

To use the above "Wh to mAh Conversion Calculator" follow the below steps:

1. Enter watts-hours: Input the Energy in Watts-hours value in the specified input box. You can enter the value in watts-hours wh or Kilowatt-hours Kwh by choosing the appropriate option from the dropdown.

2. Enter Supply Voltage: Input the supply voltage or Load voltage value in the specified input box. You can enter the value in millivolts mV, Volts V, Kilovolts kV & MegaVolt MV by choosing the appropriate option from the dropdown.

3. Reset: Click the Reset If you want to reset the calculator to perform another conversion, you can click the Reset button, and all input fields will be cleared.

4. Calculate: Click the Calculate button to obtain the results. The calculated results will be displayed in the Results: section.

5. Swap: If you want to Swap the calculated to Exchange conversion, you can click the Swap button, and Calculate will be Exchange.

6. Result: The calculated "Result" will be displayed in the respective Result In output mAh output field.

Wh to mAh conversion application

Input Fields: Users enter watt-hours wh and voltage (Volts).
Real-Time Calculation: Converts Wh to mAh instantly as the user enters the value.
Clear Results Display: Displays the calculated mAh clearly after clicking "Calculate".

Watt-hour to Milliamp-hour Conversion Chart

Watt-hour (Wh) to mAh Conversion
Input		Output
Energy (Wh)	Voltage (V)	Capacity (mAh)
10	5	2000
20	5	4000
30	5	6000
50	3.7	13513.51
100	12	8333.33
150	5	30000
200	9	22222.22
500	3.7	135135.14

Frequently Asked Questions - FAQs for Wh to mAh Calculator

Why Convert Watt Hours to Milliampere Hours?

A watt hours (Wh) and milliampere-hours (mAh) can give a comprehensive view of a battery’s capacity. Converting Wh to mAh or vice versa is often necessary for comparison, especially when purchasing or replacing batteries.

What is a 100Ah battery?

The Ampere-Hour Capacity is the amount of electricity that a battery will deliver during 20 hours before the voltage falls to 10.50V. For example, a 10Ah battery will deliver a current of 5A for 20 hours. Recommended Charge Rate (Amps).

What are Watt Hours (Wh)?

A Watt Hours (Wh) represents a unit of electrical energy that describes the total amount of Real power consumed over a specific duration. Essentially, it’s a measure of how much energy a device uses when it runs for an hour.

What is Watt-hours?

Watt-hours (Wh) is a unit of energy measurement. It represents the amount of energy consumed or produced over a period of 2 hours at a constant rate of one watt. This unit is commonly used to measure the energy consumption of electrical devices or systems. It is calculated by multiplying the power (p) in watts (w) by the time (t) in hours during which the power is consumed or produced.

What is watt-hour in battery?

A measure of the capacity of the battery is in Watt-hours (Wh). Wh is calculated by multiplying the number of Amps with the battery voltage.

About the Author

Md Jony Islam

Jony is a passionate writer and web developer. He enjoys sharing insights about technology, web development, and design. When he's not writing, he loves hiking and exploring the outdoors.

Watt-hour (Wh) to Milliamp-hour (mAh) Conversion Calculator | Wh to mAh Convert | Wh to mAh formula