Convert » Unit Converter » Electric Current » Ampere → Milliampere

Ampere → Milliampere (A → mA)

A to mA direct conversion page with calculator, reverse conversion and comparison table.

1 A = 1000 mA
1 Ampere (A) = 1000 Milliampere (mA).


swap converter

If you want to reverse convert, use Milliampere → Ampere. 1 mA = 0.001 A. You can also explore the full Electric Current converter page for more cross conversions.

Conversion formula

Ampere to Milliampere formula: value in mA = value in A × 1000.

Milliampere to Ampere formula: value in A = value in mA × 0.001.

How to convert Ampere to Milliampere

To convert Ampere to Milliampere, multiply the value in A by 1000. This gives the result in mA.

For example, 1 A = 1000 mA and 10 A = 10000 mA.

What is Ampere?

Ampere (A): SI current: charge flowing each second. 1 A = 1 C/s = 1000 mA.

What is Milliampere?

Milliampere (mA): Small current levels, such as an LED or electronic sensor. 1 mA = 0.001 A.

FAQ

How many milliampere are in 1 ampere?

There are 1000 mA in 1 A.

Why can conversion results differ slightly?

Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.

How do I convert ampere to milliampere?

Multiply the value in A by 1000 to get the value in mA.

Ampere → other Electric Current units

Ampere → Milliampere Table

The table below shows common values from Ampere to Milliampere and the reverse direction for quick reference.

AmARounded
1 A1000 mA1000.0000
2 A2000 mA2000.0000
3 A3000 mA3000.0000
4 A4000 mA4000.0000
5 A5000 mA5000.0000
10 A10000 mA10000.0000
12 A12000 mA12000.0000
15 A15000 mA15000.0000
20 A20000 mA20000.0000
25 A25000 mA25000.0000
30 A30000 mA30000.0000
40 A40000 mA40000.0000
50 A50000 mA50000.0000
75 A75000 mA75000.0000
100 A100000 mA100000.0000
200 A200000 mA200000.0000
250 A250000 mA250000.0000
500 A500000 mA500000.0000
750 A750000 mA750000.0000
1000 A1000000 mA1000000.0000
2500 A2500000 mA2500000.0000
5000 A5000000 mA5000000.0000
10000 A10000000 mA10000000.0000

Milliampere → Ampere Table

mAARounded
1 mA0.001 A0.0010
2 mA0.002 A0.0020
3 mA0.003 A0.0030
4 mA0.004 A0.0040
5 mA0.005 A0.0050
10 mA0.01 A0.0100
12 mA0.012 A0.0120
15 mA0.015 A0.0150
20 mA0.02 A0.0200
25 mA0.025 A0.0250
30 mA0.03 A0.0300
40 mA0.04 A0.0400
50 mA0.05 A0.0500
75 mA0.075 A0.0750
100 mA0.1 A0.1000
200 mA0.2 A0.2000
250 mA0.25 A0.2500
500 mA0.5 A0.5000
750 mA0.75 A0.7500
1000 mA1 A1.0000
2500 mA2.5 A2.5000
5000 mA5 A5.0000
10000 mA10 A10.0000

Milliampere → Ampere

The reverse value is 1 mA = 0.001 A.