42 ma = 0.042 a. To convert milliamperes to amperes, divide by 1,000: 42 ÷ 1,000 = 0.042.
How to convert milliamperes to amperes
a = ma × 0.001
- 1 ma = 0.001 a (and 1 a = 1,000 ma).
- Multiply the amount by the factor: 42 × 0.001 = 0.042.
- Answer: 42 ma = 0.042 a.
Shortcut: dividing by 1,000 gives the same result as multiplying by 0.001.
Milliamperes to Amperes table
| Milliamperes (ma) | Amperes (a) |
|---|---|
| 37 ma | 0.037 a |
| 38 ma | 0.038 a |
| 39 ma | 0.039 a |
| 40 ma | 0.04 a |
| 41 ma | 0.041 a |
| 42 ma | 0.042 a |
| 43 ma | 0.043 a |
| 44 ma | 0.044 a |
| 45 ma | 0.045 a |
| 46 ma | 0.046 a |
| 47 ma | 0.047 a |
| ma | a |
|---|---|
| 1 ma | 0.001 a |
| 5 ma | 0.005 a |
| 10 ma | 0.01 a |
| 50 ma | 0.05 a |
| 100 ma | 0.1 a |
| 1,000 ma | 1 a |