Current Converter

Convert between ampere, milliampere, kiloampere, and other electrical current units with scientific precision.

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Current Units Explained

Ampere (A)

The ampere is the SI unit of electric current, defined as the flow of one coulomb of electric charge per second. 1 A = 1000 mA.

Common uses: Measuring household electrical circuits, industrial equipment, and electronic devices.

Milliampere (mA)

One thousandth of an ampere. 1 mA = 0.001 A. Commonly used in small electronic circuits and medical devices.

Common uses: Phone chargers, LED circuits, medical equipment like ECG monitors.

Kiloampere (kA)

One thousand amperes. 1 kA = 1000 A. Used for high-current applications in industrial settings.

Common uses: Industrial electrical systems, power distribution networks, lightning measurements.

Biot (Bi)

A CGS unit of electric current. 1 Bi = 10 A. Rarely used in modern applications but found in older scientific literature.

Note: Part of the CGS (centimeter-gram-second) system, largely replaced by SI units.

Abampere (abA)

A CGS unit equivalent to the biot. 1 abA = 10 A. Used in some electromagnetic applications in CGS systems.

Application: Legacy scientific measurements and theoretical physics.

Statampere (stA)

A CGS electrostatic unit of current. Represents current in the CGS-ESU system.

Note: 1 A ≈ 2.998 × 10¹⁸ stA. Rarely used in practice.

Current Safety Context

  • Safe touch voltage: Below 50V AC (36V DC) is generally considered safe
  • Dangerous current: 5-10 mA causes muscle contractions
  • Lethal current: 50-100 mA can cause fibrillation
  • Household circuit: Typically 15-20 A per breaker
  • USB standard: 500 mA to 3 A depending on version