Amperes to Milliamperes
Convert amperes to milliamperes (A to mA). 1 A = 1,000 mA. Use the calculator, formula and conversion table.
How to convert amperes to milliamperes
Multiply the amount in amperes by 1,000 to get milliamperes. The displayed factor and results are rounded to 12 significant digits.
mA = A × 1,000Worked example
1 A = 1,000 mA. Change the amount in the calculator above to use your own value.
Units and assumptions
Uses amperes and decimal SI prefixes. Negative values retain the chosen reference direction. Converting current to power requires voltage and an appropriate circuit model. Values are rounded to 12 significant figures for display.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Amperes to Milliamperes table
| Amperes (A) | Milliamperes (mA) |
|---|---|
| 0 | 0 |
| 1 | 1,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
About this conversion
What is the formula for amperes to milliamperes?
mA = A × 1,000. Multiply the amount in amperes by 1,000 to get milliamperes. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to amperes?
Use the milliamperes to amperes calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the electric current converter to browse all supported pairs.