Milliamp Hours to Kilowatt Hours (mAh to kWh) Conversion Calculator

To convert milliamp hours to kilowatt hours, the formula is kilowatt hours = (milliamp hours x volts) / 1,000,000.

For example, if you have a 3.7V 10,000mAh battery pack, the calculation would be (10,000 x 3.7) / 1,000,000 = 0.037 kWh.

Milliamp Hours to Kilowatt Hours Conversion Calculator

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kilowatt hours
Conversion formula: kWh = mAh × V ÷ 1,000,000

Or would you rather convert kilowatt hours to milliamp hours?

Milliamp Hours to Kilowatt Hours Conversion Charts

Here are 2 conversion charts converting common values of milliamp hours to kilowatt hours at 3.7 volts and 5 volts -- 2 common DC voltages for battery-powered electronics such as phones, portable chargers, and Bluetooth speakers.

Milliamp Hours to Kilowatt Hours at 3.7 Volts

Milliamp Hours (mAh)Voltage (V)Kilowatt Hours (kWh)
1000 mAh3.7 V0.004 kWh
2000 mAh3.7 V0.007 kWh
3000 mAh3.7 V0.011 kWh
4000 mAh3.7 V0.015 kWh
5000 mAh3.7 V0.019 kWh
6000 mAh3.7 V0.022 kWh
7000 mAh3.7 V0.026 kWh
8000 mAh3.7 V0.03 kWh
9000 mAh3.7 V0.033 kWh
10000 mAh3.7 V0.037 kWh
11000 mAh3.7 V0.041 kWh
12000 mAh3.7 V0.044 kWh
13000 mAh3.7 V0.048 kWh
14000 mAh3.7 V0.052 kWh
15000 mAh3.7 V0.056 kWh
16000 mAh3.7 V0.059 kWh
17000 mAh3.7 V0.063 kWh
18000 mAh3.7 V0.067 kWh
19000 mAh3.7 V0.07 kWh
20000 mAh3.7 V0.074 kWh
25000 mAh3.7 V0.093 kWh
30000 mAh3.7 V0.111 kWh

Milliamp Hours to Kilowatt Hours at 5 Volts

Milliamp Hours (mAh)Voltage (V)Kilowatt Hours (kWh)
1000 mAh5 V0.005 kWh
2000 mAh5 V0.01 kWh
3000 mAh5 V0.015 kWh
4000 mAh5 V0.02 kWh
5000 mAh5 V0.025 kWh
6000 mAh5 V0.03 kWh
7000 mAh5 V0.035 kWh
8000 mAh5 V0.04 kWh
9000 mAh5 V0.045 kWh
10000 mAh5 V0.05 kWh
11000 mAh5 V0.055 kWh
12000 mAh5 V0.06 kWh
13000 mAh5 V0.065 kWh
14000 mAh5 V0.07 kWh
15000 mAh5 V0.075 kWh
16000 mAh5 V0.08 kWh
17000 mAh5 V0.085 kWh
18000 mAh5 V0.09 kWh
19000 mAh5 V0.095 kWh
20000 mAh5 V0.1 kWh
25000 mAh5 V0.125 kWh
30000 mAh5 V0.15 kWh

Note: Don't see the values you're looking for in these charts? Use our mAh to kWh calculator at the top of this page to calculate them for your specific scenario.

How to Convert Milliamp Hours to Kilowatt Hours (mAh to kWh)

To convert milliamp hours to kilowatt hours, multiply milliamp hours by volts and then divide by 1,000,000. (And no, that's not a typo!)

Conversion formula: kilowatt hours = milliamp hours × volts ÷ 1,000,000

Abbreviated formula: kWh = mAh × V ÷ 1,000,000

Example

Let's say you have a smartphone with a battery capacity of 3,000 milliamp hours (mAh) and a voltage of 3.7 volts.

To calculate your battery's kilowatt hours, you'd do the following:

(3,000 mAh × 3.7 V) ÷ 1,000,000 = 0.0111 kWh

So, your phone battery has a capacity of about 0.0111 kilowatt hours.

How to Convert Kilowatt Hours to Milliamp Hours (kWh to mAh)

Need to convert the other way?

To convert kilowatt hours to milliamp hours, divide kilowatt hours by volts and then multiply by 1,000,000.

Conversion formula: milliamp hours = kilowatt hours ÷ volts × 1,000,000

Abbreviated formula: mAh = kWh ÷ V × 1,000,000

Example

Suppose you have a device that uses 0.05 kilowatt hours (kWh) of energy and operates at a voltage of 5 volts.

To find out how many milliamp hours (mAh) that is, you can do the following calculation:

(0.05 kWh ÷ 5 V) × 1,000,000 = 10,000 mAh

So, your device uses approximately 10,000 mAh of energy at 5 volts.

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Alex Beale
Alex Beale is the founder and owner of Footprint Hero. As a self-taught DIY solar enthusiast, Alex has spent 4 years producing educational solar content across YouTube, TikTok, Instagram, and the Footprint Hero blog. During that time, he's built Footprint Hero to over 7 million blog visits and 18 million YouTube views. He lives in Tennessee.