How to convert milliamperes to amperes
A = mA × 0.001Multiply the value in milliamperes by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).
A milliampere is smaller than an ampere: it takes 1,000 milliamperes to make one ampere.
Worked examples
- 1 milliampere1 mA × 0.001 = 0.001 A
- 5 milliamperes5 mA × 0.001 = 0.005 A
- 10 milliamperes10 mA × 0.001 = 0.01 A
- 20 milliamperes20 mA × 0.001 = 0.02 A
- 100 milliamperes100 mA × 0.001 = 0.1 A
Milliamperes to amperes conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Milliamperes (mA) | Amperes (A) |
|---|---|
| 0.1 mA | 0.0001 A |
| 0.25 mA | 0.00025 A |
| 0.5 mA | 0.0005 A |
| 1 mA | 0.001 A |
| 2 mA | 0.002 A |
| 3 mA | 0.003 A |
| 4 mA | 0.004 A |
| 5 mA | 0.005 A |
| 6 mA | 0.006 A |
| 7 mA | 0.007 A |
| 8 mA | 0.008 A |
| 9 mA | 0.009 A |
| 10 mA | 0.01 A |
| Milliamperes (mA) | Amperes (A) |
|---|---|
| 12 mA | 0.012 A |
| 15 mA | 0.015 A |
| 20 mA | 0.02 A |
| 25 mA | 0.025 A |
| 30 mA | 0.03 A |
| 40 mA | 0.04 A |
| 50 mA | 0.05 A |
| 75 mA | 0.075 A |
| 100 mA | 0.1 A |
| 250 mA | 0.25 A |
| 500 mA | 0.5 A |
| 1,000 mA | 1 A |
About the units
Milliampere (mA)
The milliampere (mA) is a unit of electric current in the International System of Units (SI). One milliampere equals 0.001 amperes (A).
Ampere (A)
The SI base unit of current: 1/(1.602176634 × 10⁻¹⁹) elementary charges per second.
Frequently asked questions
How many amperes are in one milliampere?
There are 0.001 amperes in one milliampere, and this value is exact by definition.
How do I convert milliamperes to amperes?
Multiply the number of milliamperes by 0.001. For example, 10 mA × 0.001 = 0.01 A.
How many milliamperes are in one ampere?
One ampere equals 1,000 milliamperes. That is the reverse factor, 1 ÷ 0.001.
What is 10 milliamperes in amperes?
10 mA = 0.01 A.
Is this mA to A converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.