Current Converter
Convert current units with the factor behind each answer. Changing amps into another unit of current is exact. Changing amps into power is not a unit conversion.
1 mA = 0.001 A
Common conversions
- 1 A = 1,000 mA
- 1 mA = 0.001 A
- 1 kA = 1,000 A
- 1 A = 0.001 kA
- 1 µA = 0.001 mA
Amps to kW is not a unit conversion
Current and power are different quantities. You need the voltage, and for AC the power factor and the number of phases. Use the amps to kW calculator, which covers DC, single-phase and three-phase.
Where each unit is used
µA and mA appear in instrument and leakage readings, A in circuits and cables, and kA in fault levels and breaker short-circuit ratings.
Unit factors
Every unit in terms of the base unit shown. To convert, multiply by the factor of the unit you have and divide by the factor of the unit you want.
| Unit | Equals | What it is |
|---|---|---|
| µA | 1 × 10⁻⁶ A | Microampere, a millionth of an ampere. |
| mA | 0.001 A | Milliampere. Control circuits and leakage current. |
| A | 1 A | Ampere, the SI unit of electric current. |
| kA | 1,000 A | Kiloampere. Fault current and short-circuit ratings. |
| MA | 1,000,000 A | Megaampere. |
Conversion pages
Frequently asked questions
What is the formula to convert mA to A?
A = mA × 0.001. For example, 250 mA is 0.25 A.
How do I convert A back to mA?
mA = A × 1,000. The Swap button above reverses the direction for any pair of units.
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