Conversion Formula
$$I_{\text{mA}} = I_{\text{A}} \times 1000$$
Multiply amperes by 1000 to get milliamperes.
A to mA Conversion Table
| Ampere (A) | Milliampere (mA) |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
A to mA in Engineering
Current conversions are fundamental to electrical engineering, power systems, and instrumentation. Milliamps are standard for sensor signals (4-20 mA loops), while kiloamps are used for power system fault currents and large-scale industrial processes.
Ampere: SI base unit of electric current. Defined by the elementary charge. Fundamental to all electrical engineering calculations.
Milliampere: One thousandth of an ampere. Standard for instrumentation signals (4-20 mA), sensor outputs, and low-power electronics.