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megaampere milliampere |
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ampere |

How many mA in 1 ampere?
The answer is 1000.

We assume you are converting between **milliampere** and **ampere**.

You can view more details on each measurement unit:

mA or
ampere

The SI base unit for **electric current** is the ampere.

1 ampere is equal to 1000 mA, or 1 ampere.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between milliamperes and amperes.

Type in your own numbers in the form to convert the units!

The SI prefix "milli" represents a factor of
10^{-3}, or in exponential notation, 1E-3.

So 1 milliampere = 10^{-3} ampere.

In physics, the ampere (symbol: A, often informally abbreviated to amp) is the SI base unit used to measure electrical currents. The present definition, adopted by the 9th CGPM in 1948 is: "one ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in vacuum, would produce between these conductors a force equal to 2 × 10^{-7} newton per metre of length".

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