One kiloamp is exactly 1,000,000 milliamps, so converting kiloamps to milliamps is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
The milliamp is the unit almost every consumer specification uses: phone chargers, LEDs and fuses are all rated in mA. Kiloamps appear in welding, electroplating and short-circuit ratings, where the current is limited by the supply, not the load.
Two tables follow: rounded steps for quick lookup, and a set of real reference quantities converted into milliamps, which is usually more useful than the bare number.
The formula
kiloamps- The amount you are converting, in kiloamps
1,000,000- The exact number of milliamps in one kiloamp
milliamps- The converted result
How it works, step by step
- Enter the value in kiloamps.
- It is multiplied by 1,000,000, the exact factor between the two units.
- The answer is shown in milliamps, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
Car starter motor: 0.3 kA in milliamps
Take car starter motor, roughly 0.3 kA. The conversion is a single multiplication — 0.3 × 1e+06 — giving 300,000 mA. Because the relationship is proportional, doubling the input doubles the answer to 600,000 mA.
Phone fast charger: 0.003 kA in milliamps
Phone fast charger comes to about 0.003 kA. Multiplying by the factor: 0.003 × 1e+06 = 3000 mA. Dividing the answer back by 1e+06 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many milliamps are in one kiloamp?
Exactly 1,000,000. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert kiloamps to milliamps?
milliamps = kiloamps × 1,000,000. Reversed, kiloamps = milliamps ÷ 1,000,000, which is the same as multiplying by 1e-06.
Which is the bigger unit, the kiloamp or the milliamp?
The kiloamp. One kiloamp equals 1e+06 milliamps.
What does this quantity actually measure?
Both units measure how much charge flows past a point each second. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a kiloamp?
Kiloamps appear in welding, electroplating and short-circuit ratings, where the current is limited by the supply, not the load.
What is a milliamp?
The milliamp is the unit almost every consumer specification uses: phone chargers, LEDs and fuses are all rated in mA.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Kiloamps to milliamps reference tables
| Kiloamps | Milliamps |
|---|---|
| 0.5 kA | 500,000 mA |
| 1 kA | 1e+06 mA |
| 2 kA | 2e+06 mA |
| 3 kA | 3e+06 mA |
| 5 kA | 5e+06 mA |
| 10 kA | 1e+07 mA |
| 20 kA | 2e+07 mA |
| 25 kA | 2.5e+07 mA |
| 50 kA | 5e+07 mA |
| 75 kA | 7.5e+07 mA |
| 100 kA | 1e+08 mA |
| 250 kA | 2.5e+08 mA |
| 500 kA | 5e+08 mA |
| 1000 kA | 1e+09 mA |
| 5000 kA | 5e+09 mA |
Exact factor: 1 kiloamp = 1,000,000 milliamps.
| Quantity | kA | mA |
|---|---|---|
| LED indicator | 2e-05 kA | 20 mA |
| Phone fast charger | 0.003 kA | 3000 mA |
| Domestic ring-main fuse (UK) | 0.032 kA | 3.2e+04 mA |
| Car starter motor | 0.3 kA | 3e+05 mA |
| MIG welder at full output | 0.25 kA | 2.5e+05 mA |
| Microcontroller sleep mode | 5e-09 kA | 0.005 mA |
Published reference values, converted with the same factor this page uses.