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

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

For instance, if you have a device that consumes 1 kWh at 5 volts, the calculation would be (1 / 5) x 1,000,000 = 200,000 mAh.

Kilowatt Hours to Milliamp Hours Conversion Calculator

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

Or would you rather convert milliamp hours to kilowatt hours?

Kilowatt Hours to Milliamp Hours Conversion Charts

Here are a couple of conversion charts converting common values of kilowatt hours to milliamp hours at 3.7 volts and 5 volts, the most common DC voltages for small handheld electronics.

Kilowatt Hours to Milliamp Hours at 3.7 Volts

Kilowatt Hours (kWh)Voltage (V)Milliamp Hours (mAh)
1 kWh3.7 V270,270.27 mAh
2 kWh3.7 V540,540.541 mAh
3 kWh3.7 V810,810.811 mAh
4 kWh3.7 V1,081,081.081 mAh
5 kWh3.7 V1,351,351.351 mAh
6 kWh3.7 V1,621,621.622 mAh
7 kWh3.7 V1,891,891.892 mAh
8 kWh3.7 V2,162,162.162 mAh
9 kWh3.7 V2,432,432.432 mAh
10 kWh3.7 V2,702,702.703 mAh
20 kWh3.7 V5,405,405.405 mAh
30 kWh3.7 V8,108,108.108 mAh
40 kWh3.7 V10,810,810.811 mAh
50 kWh3.7 V135,13,513.514 mAh
60 kWh3.7 V16,216,216.216 mAh
70 kWh3.7 V18,918,918.919 mAh
80 kWh3.7 V21,621,621.622 mAh
90 kWh3.7 V24,324,324.324 mAh
100 kWh3.7 V27,027,027.027 mAh

Kilowatt Hours to Milliamp Hours at 5 Volts

Kilowatt Hours (kWh)Voltage (V)Milliamp Hours (mAh)
1 kWh5 V200,000 mAh
2 kWh5 V400,000 mAh
3 kWh5 V600,000 mAh
4 kWh5 V800,000 mAh
5 kWh5 V1,000,000 mAh
6 kWh5 V1,200,000 mAh
7 kWh5 V1,400,000 mAh
8 kWh5 V1,600,000 mAh
9 kWh5 V1,800,000 mAh
10 kWh5 V2,000,000 mAh
20 kWh5 V4,000,000 mAh
30 kWh5 V6,000,000 mAh
40 kWh5 V8,000,000 mAh
50 kWh5 V10,000,000 mAh
60 kWh5 V12,000,000 mAh
70 kWh5 V14,000,000 mAh
80 kWh5 V16,000,000 mAh
90 kWh5 V18,000,000 mAh
100 kWh5 V20,000,000 mAh

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

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

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

For instance, let's take a 0.1 kilowatt-hour battery that operates at 3.7 volts, which is a common voltage for many rechargeable lithium-ion batteries.

To find the milliamp hours, you'd do the following:

0.1 kWh ÷ 3.7 V × 1,000,000 = 27,027.027 mAh

So, the battery has a capacity of approximately 27,027 milliamp hours.

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

What about converting the other way?

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

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

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

Example

Suppose you have a laptop with a battery capacity of 5,000mAh and a voltage of 11.1V.

Here's how you'd find its battery capacity in kilowatt hours:

5,000 mAh × 11.1 V ÷ 1,000,000 = 0.0555 kWh

This means your laptop battery has a capacity of 0.0555 kilowatt hours.

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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.