Amperes to Megaamperes Conversion

Enter the electric current in amperes below to get the value converted to megaamperes.

Results in Megaamperes:
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1 A = 1.0E-6 MA
Hint: use a scientific notation calculator to convert E notation to decimal

How to Convert Amperes to Megaamperes

To convert an ampere measurement to a megaampere measurement, divide the electric current by the conversion ratio.

Since one megaampere is equal to 1,000,000 amperes, you can use this simple formula to convert:

megaamperes = amperes ÷ 1,000,000

The electric current in megaamperes is equal to the amperes divided by 1,000,000.

For example, here's how to convert 5,000,000 amperes to megaamperes using the formula above.
5,000,000 A = (5,000,000 ÷ 1,000,000) = 5 MA

Amperes and megaamperes are both units used to measure electric current. Keep reading to learn more about each unit of measure.


The ampere, commonly referred to as an "amp," is the electrical current constant equal to the flow of one coulomb per second.

The ampere was previously defined as a constant current that when passed through two straight and parallel conductors that are spaced one meter apart, will produce a force equal to 0.0000002 newtons per meter of length.

In 2019, the ampere was redefined as the electric current corresponding to the flow of 1/(1.602 176 634 × 10-19) elementary charges per second.[1]

The ampere is the SI base unit for electric current in the metric system. An ampere is sometimes also referred to as an amp. Amperes can be abbreviated as A; for example, 1 ampere can be written as 1 A.

Ohm's Law states the current between two points on a conductor is proportional to the voltage and inversely proportional to the resistance. Using Ohm's Law, it's possible to express the current in amperes as an expression using resistance and voltage.

IA = VV / R

The current in amperes is equal to the potential difference in volts divided by the resistance in ohms.


One megaampere is equal to 1,000,000 amperes, which are the electrical current equal to the flow of one coulomb per second.

The megaampere is a multiple of the ampere, which is the SI base unit for electric current. In the metric system, "mega" is the prefix for 106. A megaampere is sometimes also referred to as a megaamp. Megaamperes can be abbreviated as MA; for example, 1 megaampere can be written as 1 MA.

Ampere to Megaampere Conversion Table

Ampere measurements converted to megaamperes
Amperes Megaamperes
1 A 0.000001 MA
2 A 0.000002 MA
3 A 0.000003 MA
4 A 0.000004 MA
5 A 0.000005 MA
6 A 0.000006 MA
7 A 0.000007 MA
8 A 0.000008 MA
9 A 0.000009 MA
10 A 0.00001 MA
100 A 0.0001 MA
1,000 A 0.001 MA
10,000 A 0.01 MA
100,000 A 0.1 MA
1,000,000 A 1 MA


  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019,

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