Amperes to Milliamperes Converter

A → mA: type a value and the result appears instantly.

1 A = 1,000 mA
1 mA = 0.001 A

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To

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How to convert amperes to milliamperes

Use this formula:

mA = A × 1,000

Examples

5 A = 5,000 mA
12 A = 12,000 mA
100 A = 100,000 mA

A to mA conversion chart

amperes (A)	milliamperes (mA)
0.1 A	100 mA
0.25 A	250 mA
0.5 A	500 mA
1 A	1,000 mA
2 A	2,000 mA
3 A	3,000 mA
4 A	4,000 mA
5 A	5,000 mA
6 A	6,000 mA
7 A	7,000 mA
8 A	8,000 mA
9 A	9,000 mA
10 A	10,000 mA
12 A	12,000 mA
15 A	15,000 mA
20 A	20,000 mA
25 A	25,000 mA
30 A	30,000 mA
40 A	40,000 mA
50 A	50,000 mA
60 A	60,000 mA
70 A	70,000 mA
75 A	75,000 mA
80 A	80,000 mA
90 A	90,000 mA
100 A	100,000 mA
150 A	150,000 mA
200 A	200,000 mA
250 A	250,000 mA
500 A	500,000 mA
1,000 A	1,000,000 mA

About the units

Ampere (A) is a metric (SI) unit. 1 A = 1,000 mA.

Milliampere (mA) is a metric (SI) unit. 1 mA = 0.001 A.

Frequently asked questions

How do I convert amperes to milliamperes?: Multiply the value in A by 1,000.
How many milliamperes are in 1 ampere?: 1 A = 1,000 mA.
What is 12 A in mA?: 12 A = 12,000 mA.
How do I convert milliamperes to amperes?: Use the reverse converter: mA → A.

Electric Current Converter →

Related conversions

mA → A µA → mA mA → µA

Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters