maratoolHow to convert milliamps to amps (and other current units)
Type a current — read A, mA, µA, nA, or kA instantly.
Sleep currents read in µA, charger specs in mA or A, and fault currents in kA. The Electric Current Converter moves across the prefixes without slip-ups.
How it works
- Pick units — "Milliampere (mA)" to "Ampere (A)", or any other pair.
- Type a value — the result updates as you type, with swap and copy.
- Copy — one click, with "Copied!" feedback.
Electric current conversion factors
Every unit converts through the ampere (the base unit). To convert A → B, multiply by A's factor and divide by B's:
| Unit | = this many amperes |
|---|---|
| Kiloampere (kA) | 1,000 |
| Ampere (A) | 1 |
| Milliampere (mA) | 0.001 |
| Microampere (µA) | 1.0000 × 10^-6 |
| Nanoampere (nA) | 1.0000 × 10^-9 |
| Abampere / Biot (abA) | 10 |
| Statampere (statA) | 3.3356 × 10^-10 |
When you need it
Typical scales: a microcontroller sleeps at 1–50 µA, an LED runs at 5–20 mA, a laptop charger delivers 3–5 A, and breaker interrupting ratings reach 10 kA. Each step on the prefix ladder is a factor of 1,000.
Sources & methodology
Conversion factors follow BIPM SI Brochure; exact-by-definition factors are marked in the tool itself. All math runs client-side in your browser — nothing is uploaded.
More conversion guides
- How to convert volts, millivolts, and kilovolts
- How to convert ohms, kΩ, and MΩ resistor values
- How to convert mAh to coulombs (battery charge units)
Or browse everything at once in the new unit & sizing converters roundup.