Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Milliamperes to Microamperes
Convert mA to µA instantly, then review the formula, assumptions, and rounding guidance.
Electrical unitsInstant result
Decimals
Formula result = input × 0.001 ÷ 0.000001. 1 mA = 1,000 µA
Common examples
One value, several units
Amperes0.001 A
Kiloamperes0 kA
Microamperes1,000 µA
Conversion table
| mA | µA |
|---|---|
| 1 mA | 1,000 µA |
| 2 mA | 2,000 µA |
| 5 mA | 5,000 µA |
| 10 mA | 10,000 µA |
| 25 mA | 25,000 µA |
| 50 mA | 50,000 µA |
| 100 mA | 100,000 µA |
Conversion chart
1 mA1,000 µA
5 mA5,000 µA
10 mA10,000 µA
25 mA25,000 µA
50 mA50,000 µA
Worked example
1 ampere equals 1,000 milliamperes.
Unit definition
Milliamperes (mA) One milliamperes equals 0.001 ampere.
Unit history
Milliamperes is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert mA to ampere.
3. Convert the base value to µA and apply your display precision.
Understand the result before using it
Milliamperes to Microamperes converts a value measured in Milliamperes (mA) into the equivalent value in Microamperes (µA). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 0.001 ÷ 0.000001
Assumptions
- Milliamperes and Microamperes represent the same current quantity.
- The input is expressed in mA; the output is expressed in µA.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 mA = 1,000 µA. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a mA measurement in a document that expects µA.
- Compare a milliamperes value with a value reported in microamperes.
- Check the mA-to-µA arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse mA with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Milliamperes to Microamperes?
result = input × 0.001 ÷ 0.000001 Using the displayed relationship, 1 mA equals 1,000 µA.
How many Microamperes are in one Milliamperes?
One Milliamperes is 1,000 Microamperes. The displayed digits may be rounded.
Can I reverse the mA to µA conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts µA back to mA.
Is the Milliamperes to Microamperes result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.