Milliampere (mA)
One thousandth of an ampere. Used for electronics and 4-20 mA sensor signals.
What is a milliampere?
- Symbol
- mA
- Quantity
- Electric Current
- Unit system
- SI
- Definition
- One thousandth of an ampere. Used for electronics and 4-20 mA sensor signals.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for LEDs, small electronics, USB charging and 4-20 mA industrial sensor signals.
Milliampere in other electric current units
- 1 mA = 0.001 AMilliampere to Ampere converter
- 1 mA = 0.000001 kAKiloampere
- 1 mA = 1000 µAMilliampere to Microampere converter
- 1 mA = 1000000 nANanoampere
- 1 mA = 0.0001 abAAbampere (biot)
- 1 mA = 2997924.58 statAStatampere
Milliampere quick reference
| Milliampere | Ampere | Microampere | Kiloampere |
|---|---|---|---|
| 1 mA | = 0.001 A | = 1000 µA | = 0.000001 kA |
| 10 mA | = 0.01 A | = 10000 µA | = 0.00001 kA |
| 100 mA | = 0.1 A | = 100000 µA | = 0.0001 kA |
| 1000 mA | = 1 A | = 1000000 µA | = 0.001 kA |
Where the milliampere fits
The next smaller electric current unit is the microampere (µA). 1 mA = 1000 µA, and 1 µA = 0.001 mA.
The next larger electric current unit is the ampere (A). 1 mA = 0.001 A, and 1 A = 1000 mA.
Frequently asked questions
- How many amperes are in one milliampere?
- One milliampere = 0.001 A (amperes).
- How many microamperes are in one milliampere?
- One milliampere = 1000 µA (microamperes).
- How many kiloamperes are in one milliampere?
- One milliampere = 0.000001 kA (kiloamperes).