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

## Milliamp Hours to Amp Hours Conversion Calculator

**Conversion formula:**Ah = mAh Ã· 1000

Or would you rather convert amp hours to milliamp hours?

## Milliamp Hours to Amp Hours Conversion Chart

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

Milliamp Hours (mAh) | Amp Hours (Ah) |
---|---|

1 mAh | 0.001 Ah |

2 mAh | 0.002 Ah |

3 mAh | 0.003 Ah |

4 mAh | 0.004 Ah |

5 mAh | 0.005 Ah |

10 mAh | 0.01 Ah |

20 mAh | 0.02 Ah |

30 mAh | 0.03 Ah |

40 mAh | 0.04 Ah |

50 mAh | 0.05 Ah |

100 mAh | 0.1 Ah |

250 mAh | 0.25 Ah |

500 mAh | 0.5 Ah |

750 mAh | 0.75 Ah |

1000 mAh | 1 Ah |

1500 mAh | 1.5 Ah |

2000 mAh | 2 Ah |

2500 mAh | 2.5 Ah |

3000 mAh | 3 Ah |

3500 mAh | 3.5 Ah |

4000 mAh | 4 Ah |

4500 mAh | 4.5 Ah |

5000 mAh | 5 Ah |

6000 mAh | 6 Ah |

7000 mAh | 7 Ah |

8000 mAh | 8 Ah |

9000 mAh | 9 Ah |

10000 mAh | 10 Ah |

15000 mAh | 15 Ah |

20000 mAh | 20 Ah |

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

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

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

**Conversion formula:** amp hours = milliamp hours Ã· 1000

**Abbreviated formula:** Ah = mAh Ã· 1000

### Example

Suppose I have a rechargeable 18650 lithium-ion battery for one of my projects and it has a capacity of 2000 milliamp hours.

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

2000 mAh Ã· 1000 = 2 Ah

So, in this example, the battery capacity can also be expressed as 2 amp hours.

*That's it!*

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

Need to convert the other way?

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

**Conversion formula:** milliamp hours = amp hours Ã— 1000

**Abbreviated formula:** mAh = Ah Ã— 1000

### Example

For instance, let's say you have a 10Ah portable power bank. What is its capacity in milliamp hours?

10 Ah Ã— 1000 = 10000 mAh

So, in this example, your power bank has a capacity of 10,000 milliamp hours. (10,000 mAh is currently one of the most common power bank sizes on the market.)

## What Is a Milliamp Hour?

A milliampere hour -- often shortened to *milliamp hour* -- is a unit of electric charge. It represents the amount of electric charge that can be transferred by a current of one milliampere in one hour.

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

Milliamp hours are a common way to express battery capacity for batteries found in portable electronics, such as phones, tablets, headphones, and battery packs.

## What Is an Amp Hour?

An ampere hour -- often shortened to *amp hour* -- is a unit of electric charge, equal to the charge 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.

Amp hours are a common way to express battery capacity for larger batteries, such as 12V batteries.