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Electric Current Converter processes your data locally in your browser. Nothing is sent to or stored on our servers.

How do I use Electric Current Converter?

Open the tool, enter or paste your input, and your result appears instantly. Use the copy button to save it. The whole process takes under a minute.

Current Converter

Convert electric current units like ampere, milliampere.

Convert Units

From:

To:

Result:

Convert electric current measurements between ampere, milliampere, kiloampere, and more.

What is Electric Current Converter?

Electric current is the rate of flow of electric charge. It measures how many coulombs of charge pass a given point per second. Current is one of the seven SI base quantities and powers all electrical devices from microchips to power grids.

Understanding the Units

Ampere (A)

The SI base unit of electric current. One ampere equals one coulomb of charge flowing per second.

Common Uses: Household circuits, motors, battery chargers

Milliampere (mA)

One-thousandth of an ampere.

Common Uses: Electronic circuits, sensors, LED indicators

Conversion: 1 A = 1,000 mA

Microampere (µA)

One-millionth of an ampere.

Common Uses: Precision sensors, bioelectrical measurements

Conversion: 1 mA = 1,000 µA

Biot (Bi)

CGS unit of current, equal to 10 amperes.

Common Uses: Older scientific literature

Conversion: 1 Bi = 10 A

Common Conversions

LED indicator light: 20 mA = 0.02 A
USB 2.0 charging: 500 mA = 0.5 A
Smartphone fast charging: 2–3 A
Household circuit (US): 15–20 A
Car starter motor: 100–200 A

Conversion Formulas

Current = Charge ÷ Time (I = Q/t)
Ohm's Law: Current = Voltage ÷ Resistance (I = V/R)
Power relation: Current = Power ÷ Voltage (I = P/V)
A to mA: mA = A × 1,000
mA to µA: µA = mA × 1,000

Practical Examples

USB-C fast charging: 3–5 A at 20 V = 60–100 W power

Electric vehicle Level 2 charger: 32 A at 240 V = 7.7 kW

Human electric shock sensation threshold: ~1 mA

Cardiac defibrillator peak current: ~30–45 A for a few milliseconds

When to Use Each Unit

Ampere (A): Standard electrical measurements, circuit breaker ratings, motor specs

Milliampere (mA): Electronic circuits, battery drain, small device specifications

Microampere (µA): Precision sensor circuits, IoT sleep-mode current, bioelectrical signals

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