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Milliampere-hours to Ampere-hours Converter

Convert milliampere-hours to ampere-hours and Ah to mAh instantly. Bidirectional battery capacity converter with formula and common values.

mAh

Ampere-hours

5

Ah

5000 mAh = 5 Ah

Ah = mAh ÷ 1000

Milliampere-hours to Ampere-hours: 1 mAh equals 0.001 Ah. To convert milliampere-hours to ampere-hours, multiply by 0.001 (Ah = mAh ÷ 1000). For example, 10 mAh = 0.01 Ah.

How to Convert Milliampere-hours to Ampere-hours

To convert from milliampere-hours to ampere-hours, multiply the value by 0.001. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Milliampere-hours to Ampere-hours: Ah = mAh ÷ 1000
  • Ampere-hours to Milliampere-hours: mAh = Ah × 1000

Milliampere-hours to Ampere-hours Conversion Chart

Milliampere-hours (mAh)Ampere-hours (Ah)
0.10.0001
0.250.00025
0.50.0005
10.001
20.002
30.003
50.005
100.01
200.02
250.025
500.05
1000.1
2500.25
10001

Understanding the Units

What is a Milliampere-hour?

An ampere-hour equals exactly 3,600 coulombs — a current of one ampere flowing for one hour. It is the standard battery-capacity rating.

Common contexts: battery capacity, power tools, EV.

What is an Ampere-hour?

An ampere-hour equals exactly 3,600 coulombs — a current of one ampere flowing for one hour. It is the standard battery-capacity rating.

Common contexts: battery capacity, power tools, EV.

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FAQ

How do I convert mAh to Ah?

Divide the capacity in milliampere-hours by 1,000. For example, 5,000 mAh ÷ 1,000 = 5 Ah.

What is a milliampere-hour?

A milliampere-hour (mAh) is one-thousandth of an ampere-hour. It is the standard unit for smartphone and small device battery capacity.

How much is 5,000 mAh in ampere-hours?

5,000 mAh equals 5 Ah. This is a common capacity for modern smartphone batteries.

When should I use Ah instead of mAh?

Use Ah for larger batteries: car batteries (40-100 Ah), deep-cycle batteries, UPS systems, and solar storage. Use mAh for portable electronics.

Can I compare mAh across different voltages?

Not directly. A 3,000 mAh battery at 3.7 V stores 11.1 Wh, while a 3,000 mAh battery at 7.4 V stores 22.2 Wh. Use Wh for cross-voltage comparisons.

How many ampere-hours are in 1 milliampere-hour?

1 mAh equals 0.001 Ah.

How do you convert milliampere-hours to ampere-hours?

Multiply the milliampere-hour value by 0.001. Formula: Ah = mAh ÷ 1000.

How many ampere-hours are in 5 milliampere-hours?

5 mAh = 0.005 Ah.

How do you convert ampere-hours back to milliampere-hours?

Use the inverse formula: mAh = Ah × 1000. For example, 1 Ah = 1000 mAh.

What is the difference between Milliampere-hour and Ampere-hour?

An ampere-hour equals exactly 3,600 coulombs — a current of one ampere flowing for one hour. It is the standard battery-capacity rating. An ampere-hour equals exactly 3,600 coulombs — a current of one ampere flowing for one hour. It is the standard battery-capacity rating.