Electric current converter
Convert µA to mA — microampere to milliampere
Convert microamperes (µA) to milliamperes (mA) instantly. 1 µA = 0.001 mA. Free calculator with formula, conversion table, and A base-unit equivalent.
Also searched as: uA to mA, micro ampere to milli ampere, micro to milli ampere, micro amp to milli amp, micro amps to milli amps.
- Scientific Notation
- 3.3 × 10⁰ mA
- Real-World Context
- 1 µA is roughly the current in pacemaker circuits
- Step-by-Step
- 1. Start with 3,300 µA. 2. Since 1 micro-unit = 1/1,000th of a milli-unit, divide by 1,000. 3. 3,300 ÷ 1,000 = 3.3 mA.
- Formula Used
- ÷ 1,000 (micro = 10⁻⁶, milli = 10⁻³)
Quick Conversions
| Mega | 3.3 × 10⁻⁹ MA |
|---|---|
| Kilo | 0.0000033 kA |
| Base Unit (amperes) | 0.0033 amperes |
| Nano | 3,300,000 nA |
| Pico | 3.3 × 10⁹ pA |
Quick µA to mA answer
1 µA = 0.001 mA
divide by 1,000
3,300 µA = 3.3 mA
microampere to milliampere formula
Milli is 10^-3 and micro is 10^-6. They are three powers of ten apart, so every µA to mA conversion uses the exact factor 1,000.
mA = µA ÷ 1,000
3,300 µA ÷ 1,000 = 3.3 mAµA to mA table
Common values for microamperes converted to milliamperesand the base unit (A).
| microamperes | milliamperes | amperes |
|---|---|---|
| 1 µA | 0.001 mA | 0.000001 A |
| 10 µA | 0.01 mA | 0.00001 A |
| 100 µA | 0.1 mA | 0.0001 A |
| 1,000 µA | 1 mA | 0.001 A |
| 2,000 µA | 2 mA | 0.002 A |
| 5,000 µA | 5 mA | 0.005 A |
| 10,000 µA | 10 mA | 0.01 A |
| 20,000 µA | 20 mA | 0.02 A |
| 50,000 µA | 50 mA | 0.05 A |
| 100,000 µA | 100 mA | 0.1 A |
| 1,000,000 µA | 1,000 mA | 1 A |
Understanding microamperes and milliamperes
A microampere (µA) is 10⁻⁶ of the base unit (ampere) and a milliampere (mA) is 10⁻³. They sit three powers of ten apart, so going from µA to mA means dividing by exactly 1,000 — move the decimal point three places to the left.
Microamperes are the language of sleep modes and leakage. A datasheet promising 3 µA in standby versus 30 µA is the difference between a coin cell lasting years and lasting months, and measuring at that level needs a current-sense amplifier or a source-measure unit rather than a handheld meter.
This calculator shifts the decimal exponent rather than multiplying in binary floating point, so 3,300 µA returns exactly 3.3 mA — not a value with a trailing rounding error.
Common µA to mA mistake
Sleep-current budgets get blown by summing µA figures while ignoring one mA-scale item — a single pull-up resistor or an always-on LDO quiescent current will dominate everything else on the list.
When to use µA vs mA
microamperes and milliamperes are used for sensor draw, standby power, leakage current, battery drain, and low-power electronics. Use the larger milli unit when the number becomes easier to scan, and the smaller micro unit when you need finer detail.