Electric Current converter
Ampere to Milliampere Converter
Converts ampere to milliampere for current.
Result
1 A = 1,000 mA
Also equals
Conversion formula
mA = A × 10001 ampere equals 1,000 milliampere.
Ampere to Milliampere table
| Ampere (A) | Milliampere (mA) |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
What is Ampere to Milliampere?
Converting amperes to milliamperes is one of the most common current conversions in electronics. One ampere equals 1,000 milliamperes. The formula is mA = A × 1000.
About this conversion
This converter uses the displayed definition for ampere and its recognized relationship to milliampere. Calculations retain full precision internally, and only the visible result is rounded. You can swap the conversion direction without changing the underlying standard.
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When to convert A to mA
Use this conversion for electronics, battery ratings, USB charging, LED circuits, sensor currents, and low-power design.
Frequently asked questions
How do I convert amperes to milliamperes?+
Enter the amperes value in the converter. The result uses the defined factor 1000.00000000 and is rounded only for display.
Does the converter keep full precision?+
Yes. Calculations retain high precision throughout each step, while the visible result is rounded for readability.
How many mA is 1 A?+
1 A is 1,000 mA.
How many mA is 0.5 A?+
0.5 A is 500 mA.
Why do small electronics use milliamperes?+
Small devices like LEDs, sensors, and phone chargers typically draw currents in the milliampere range.
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