Milliamps to Amps Converter
Convert milliamperes (mA) to amperes (A) as you type — 1 mA = 0.001 A. Switch units, change the precision or copy the result.
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How to use this tool
Steps for using the Unit Converter.
- Enter a value in From — milliamperes are already selected.
- The result in amperes appears instantly. Change either unit to convert to anything else in current.
- Use the swap button for the reverse conversion, and set the decimal places you need.
- Turn on Show formula to see the calculation, then copy or share the result.
Example
1 mA to A
1 mAA = 1 ÷ 1000 = 0.001 ACommon use cases
- LED and microcontroller currents in mA.
- Battery life estimates.
- Fuse and cable ratings in A.
Milliamps to Amps conversion table
| Milliampere (mA) | Ampere (A) |
|---|---|
| 0.1 mA | 0.0001 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 |
| 10 mA | 0.01 A |
| 15 mA | 0.015 A |
| Milliampere (mA) | Ampere (A) |
|---|---|
| 20 mA | 0.02 A |
| 25 mA | 0.025 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 |
Values rounded to 6 decimal places.
Related conversions
The units
- Milliampere (mA)
- 1/1000 A. Part of the Metric system.
- Ampere (A)
- SI base unit of electric current. Part of the SI system.
How to convert milliamperes to amperes
Comparing device current draw in mA with fuse, cable and power-supply ratings in amps.
To convert milliamperes to amperes, use A = mA ÷ 1000. One milliampere equals 0.001 amperes, and one ampere equals 1,000 milliamperes.
Milliampere (mA): 1/1000 A. Ampere (A): SI base unit of electric current.
For the opposite direction, use the Amps to milliamps converter. All electric current units are on the current converter.
Limitations
- Results are rounded to the decimal places you choose; the calculation itself keeps full precision.
Frequently asked questions
How many amperes are in a milliampere?
1 mA = 0.001 A. Multiply milliamperes by 0.001 (or use A = mA ÷ 1000).
How do I convert milliamperes to amperes?
Use A = mA ÷ 1000. For example, 1 mA = 0.001 A and 10 mA = 0.01 A.
How many milliamps are in an amp?
1,000 mA.
How do I estimate battery life from mA?
Divide capacity in mAh by current in mA: a 2,000 mAh battery at 100 mA lasts about 20 hours (in practice less).