Ampere to Milliampere
1 A = 1000.00 mA
Convert Ampere (A) to Milliampere (mA) with engineering-grade precision. Instant results, formula, and reference table below.
1 Ampere ≈1000 Milliampere
How to convert Ampere to Milliampere (A to mA)
Converting Amperes to Milliamperes is critical for developers working with international data standards or scientific applications. This tool performs the calculation entirely on your client (browser) using JavaScript/WASM, ensuring zero latency and maximum privacy.
The Formula
1 A = 1000.00 mA
Calculation Example
Let's say you want to convert 5 A to mA:
- Input: 5 A
- Calculation: 5 × 1000.00
- Result: 5000.0000 mA
About the Ampere to Milliampere conversion
The conversion factor from Ampere (A) to Milliampere (mA) is 1000.00, meaning 1 A = 1000.00 mA and inversely 1 mA = 0.001 A. That makes the Ampere the larger of the two units in the current category, where the SI base unit is the ampere. Every ratio here is derived from the SI/international definition rather than a rounded approximation, so results are stable across repeated conversions.
Need the reverse? Use the Milliampere to Ampere converter.
Frequently Asked Questions
How do I convert Ampere to Milliampere?
To convert Ampere to Milliampere, you need to multiply the A value by 1000.00.
What is the formula for A to mA?
The simple formula is: mA = A × 1000.00.
Which is bigger: Ampere or Milliampere?
A Ampere is bigger. One Ampere is equal to approx 1000.0000 Milliamperes.
How many Amperes are in one Milliampere?
There are approximately 0.00100000 Amperes in one Milliampere.
Quick Conversion Table
| A | mA |
|---|---|
| 1 | 1000.0000 |
| 5 | 5000.0000 |
| 10 | 10000.0000 |
| 20 | 20000.0000 |
| 50 | 50000.0000 |
| 100 | 100000.0000 |