Electric current converter
Type a current, choose the units, and see the same current in every common unit, including the old CGS abampere and statampere.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Type a number. A dot or a comma works as the decimal separator.
- Choose the unit you have and the unit you need. The ⇄ button swaps them.
- The table below shows the same value in all common units at once.
Conversion factors
Every unit is converted through the ampere (A).
| Unit |
Value |
| 1 kiloampere (kA) |
1,000 A |
| 1 milliampere (mA) |
0.001 A |
| 1 microampere (µA) |
10⁻⁶ A |
| 1 abampere |
10 A |
| 1 statampere |
≈ 3.33564 × 10⁻¹⁰ A |
Worked example
A phone charger rated 2,100 mA delivers 2,100 × 0.001 = 2.1 A. A 50 µA sensor current is 50 × 10⁻⁶ = 0.00005 A.
Quick reference
- 1 A = 1,000 mA = 1,000,000 µA
- 1 A = 1 C/s
- Ohm’s law: I = V / R
Frequently asked questions
How many milliamps are in an amp?
1,000. One ampere equals 1,000 milliamperes (mA) and 1,000,000 microamperes (µA).
What is an abampere?
A unit from the CGS electromagnetic system, equal to exactly 10 amperes. It is also called the biot.
What is a statampere?
The CGS electrostatic unit of current. One statampere is about 3.33564 × 10⁻¹⁰ A, which is 1/2,997,924,580 A because it is tied to the speed of light.
How is the ampere defined?
Since 2019 the ampere is fixed by the elementary charge: e = 1.602176634 × 10⁻¹⁹ C exactly, with one ampere being one coulomb per second.