Electric Current Converter
Electric current is the rate at which electric charge flows. The ampere is one of the seven SI base units; since 2019 it has been defined by fixing the value of the elementary charge.
1 Ampere = 1,000 Milliampere
How to convert Ampere to Milliampere
One Ampere equals 1,000 Milliampere, so multiply any value in A by 1,000 to get mA. To convert back, divide by 1,000 — or multiply by 0.001.
mA = A × 1,000
Example: 25 A × 1,000 = 25,000 mA.
Ampere to Milliampere table
| Ampere (A) | Milliampere (mA) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Milliampere to Ampere table
| Milliampere (mA) | Ampere (A) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
Electric Current units at a glance
All 4 units this converter supports, each expressed in Ampere (A) and the other way round.
| Unit | Symbol | 1 unit in A | 1 A in unit |
|---|---|---|---|
| Ampere | A | 1 | 1 |
| Milliampere | mA | 0.001 | 1,000 |
| Microampere | µA | 0.000001 | 1,000,000 |
| Kiloampere | kA | 1,000 | 0.001 |
Where electric current conversions are used
Circuit design, sizing fuses and cables, battery and charger ratings, and electronics, where milliamps and microamps are typical.
Frequently asked questions
What is 1 Ampere in Milliampere?
1 Ampere (A) is 1,000 Milliampere (mA).
What is 1 Milliampere in Ampere?
1 Milliampere (mA) is 0.001 Ampere (A).
How do I convert Ampere to Milliampere?
Multiply the value in Ampere by 1,000. For example, 5 A × 1,000 = 5,000 mA. To go the other way, divide by 1,000.
How many units does the electric current converter support?
It converts between 4 units: Ampere, Milliampere, Microampere, Kiloampere.
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Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.