Amp Hours to Milliamp Hours (Ah to mAh) Conversion Calculator

Use our calculator to easily convert amp hours to milliamp hours (Ah to mAh).

Amp Hours to Milliamp Hours Conversion Calculator

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milliamp hours (mAh)
Conversion formula: mAh = Ah × 1000

Or would you rather convert milliamp hours to amp hours?

Amp Hours to Milliamp Hours Conversion Chart

Here is a conversion chart converting common values of amp hours to milliamp hours.

Amp Hours (Ah)Milliamp Hours (mAh)
0.01 Ah10 mAh
0.02 Ah20 mAh
0.03 Ah30 mAh
0.04 Ah40 mAh
0.05 Ah50 mAh
0.06 Ah60 mAh
0.07 Ah70 mAh
0.08 Ah80 mAh
0.09 Ah90 mAh
0.1 Ah100 mAh
0.2 Ah200 mAh
0.25 Ah250 mAh
0.3 Ah300 mAh
0.4 Ah400 mAh
0.5 Ah500 mAh
0.6 Ah600 mAh
0.7 Ah700 mAh
0.75 Ah750 mAh
0.8 Ah800 mAh
0.9 Ah900 mAh
1 Ah1,000 mAh
2 Ah2,000 mAh
3 Ah3,000 mAh
4 Ah4,000 mAh
5 Ah5,000 mAh
6 Ah6,000 mAh
7 Ah7,000 mAh
8 Ah8,000 mAh
9 Ah9,000 mAh
10 Ah10,000 mAh

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

How to Convert Amp Hours to Milliamp Hours (Ah to mAh)

To convert amp hours to milliamp hours, you multiply the number of amp hours by 1000.

Conversion formula: milliamp hours = amp hours × 1000

Abbreviated formula: mAh = Ah × 1000

Example

Let's say I have a small 12V battery that has a capacity of 1.2 amp hours.

Here's how to convert this number to milliamp hours:

1.2 Ah × 1000 = 1200 mAh

So, in this example, the battery's capacity can also be expressed as 1200 milliamp hours.

Simple, isn't it?

How to Convert Milliamp Hours to Amp Hours (mAh to Ah)

Need to convert the other way?

To convert milliamp hours (mAh) to amp hours (Ah), you divide the number of milliamp hours by 1000.

Conversion formula: amp hours = milliamp hours ÷ 1000

Abbreviated formula: Ah = mAh ÷ 1000

Example

Let's say you have a rechargeable battery that is rated at 2000 milliamp hours.

Here's how to convert this number to amp hours:

2000 mAh ÷ 1000 = 2 Ah

So, in this example, the battery has a capacity of 2 amp hours.

Simple as that!

What Is an Amp Hour?

An ampere hour -- often shortened to amp hour -- is a unit of electric charge. It represents the amount of electricity transferred by a steady current of one ampere flowing for one hour.

Ampere hour is abbreviated Ah. So, 1 ampere hour can be written as 1 Ah.

What Is a Milliamp Hour?

A milliampere hour -- often shortened to milliamp hour -- is a unit of electric charge commonly used in batteries. It represents the amount of electrical charge that can be delivered by a battery at a rate of one milliampere for one hour.

Milliampere hour is abbreviated mAh. So, 1000 milliampere hours can be written as 1000 mAh.

Note: It's important to point out that amp hours and milliamp hours are limited ways of conveying a battery's capacity because they don't take into account battery voltage. To do so, you'll need to calculate the battery's watt hours (Wh). Our battery capacity calculator can help with that.

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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.