⚡ Electric Current Conversion 2026
Convert between amperes, milliamps, microamps, kiloamps & 25+ current units
Conversion Result
1,000 mA
1 A = 1,000 mA
Understanding Electric Current Units
⚡ Ampere (A)
The SI base unit of electric current. One ampere = flow of one coulomb of charge per second. Named after André-Marie Ampère.
📊 Milliampere (mA)
One thousandth of an ampere (10⁻³ A). Common for small electronics, LEDs, sensors, and battery specifications.
🔬 Microampere (µA)
One millionth of an ampere (10⁻⁶ A). Used in precision electronics, medical devices, and low-power circuits.
⚙️ Kiloampere (kA)
One thousand amperes (10³ A). Used in industrial applications, power systems, and welding equipment.
Electric Current Conversion Table
| Unit | Symbol | In Amperes | Common Use |
|---|---|---|---|
| Picoampere | pA |
10⁻¹² | Ion channels, tunneling |
| Nanoampere | nA |
10⁻⁹ | Sensors, leakage current |
| Microampere | µA |
10⁻⁶ | Medical devices, low-power |
| Milliampere | mA |
10⁻³ | LEDs, batteries, electronics |
| Ampere | A |
1 | SI base unit |
| Kiloampere | kA |
10³ | Industrial, welding |
| Megaampere | MA |
10⁶ | Lightning, plasma |
| Abampere | abA |
10 | CGS-EMU system |
| Statampere | statA |
3.336×10⁻¹⁰ | CGS-ESU system |
Frequently Asked Questions
What is electric current?
Electric current is the flow of electric charge through a
conductor. It's measured in amperes (A). Current flows from positive to negative
(conventional) or electrons flow negative to positive (electron flow).
What is the SI unit of electric current?
The SI unit is the ampere (A). Defined as the flow of exactly
1/1.602176634×10⁻¹⁹ elementary charges (electrons) per second. Named after André-Marie Ampère.
How do I convert amps to milliamps?
Multiply by 1,000. mA = A × 1,000. Example: 0.5 A = 500 mA.
Milliamps are commonly used for small device specifications.
How do I convert milliamps to amps?
Divide by 1,000. A = mA ÷ 1,000. Example: 250 mA = 0.25 A. Use
this when calculating power (P = V × I) with voltage.
How do I convert microamps to milliamps?
Divide by 1,000. mA = µA ÷ 1,000. Example: 5,000 µA = 5 mA.
Microamps (µA) are one-thousandth of a milliamp.
What is a coulomb per second?
1 coulomb/second = 1 ampere exactly. This is the fundamental
definition of the ampere—the rate of charge flow. 1 C = 6.242×10¹⁸ electrons.
What is an abampere?
The abampere (electromagnetic unit) from the CGS system =
10 amperes. Also called the biot. Used in older electromagnetic calculations.
What is a statampere?
The statampere (electrostatic unit) from CGS-ESU =
3.336×10⁻¹⁰ A. Related to the speed of light constant. Rarely used today.
What is the gilbert unit?
The gilbert is actually a unit of magnetomotive force, not
current. 1 gilbert = 10/(4π) ampere-turns ≈ 0.7958 A-t. Used in magnetic calculations.
How much current is dangerous?
1 mA is barely perceptible. 10-20 mA causes
muscle contraction. 100-200 mA through the heart can be fatal. Safety depends on path,
duration, and AC/DC.
What current do common devices use?
LED: 10-20 mA. Phone charging: 1-3 A.
Laptop: 2-5 A. Electric car: 100-500 A. House
circuit: 15-20 A breaker.
What is the relationship between amps, volts, and watts?
Watts = Volts × Amps (P = V × I). Also, Amps = Watts ÷
Volts. This is Ohm's Law combined with power law for electrical calculations.
What is volt/ohm in current terms?
By Ohm's Law, I = V/R. So 1 volt ÷ 1 ohm = 1
ampere. This is the fundamental relationship between voltage, current, and resistance.
What is watt/volt?
From P = V × I, we get I = P/V. So 1 watt ÷ 1 volt = 1
ampere. This helps calculate current when power and voltage are known.
What is siemens volt?
Siemens (S) is conductance (1/Ω). 1 siemens × 1 volt = 1 ampere.
This is because I = G × V where G is conductance in siemens.
What is the difference between DC and AC current?
DC (Direct Current) flows in one direction (batteries,
electronics). AC (Alternating Current) reverses direction cyclically (wall outlets,
50/60 Hz). Same units (amps) for both.
How accurate is this current converter?
Uses JavaScript double-precision (64-bit) with ~15-16 significant digits. Based on
SI/NIST standard values for maximum accuracy in scientific calculations.