Current Converter
Convert between electric current units instantly: amperes, milliamperes, microamperes, and kiloamperes. Free, accurate, 100% in your browser.
Reference
How does current conversion work?
Current conversion uses fixed SI prefix ratios with the ampere (A) as the base unit. 1 kA = 1,000 A, 1 mA = 0.001 A, and 1 µA = 0.000001 A. The ampere is one of the seven SI base units, defined by the International Bureau of Weights and Measures as the flow of exactly 1/1.602176634×10⁻¹⁹ elementary charges per second. All conversions are exact because they use standard SI metric prefixes.
Unit reference
Microampere (µA) — one millionth of an ampere. Used in leakage current measurements, biomedical sensors, and low-power electronics. Milliampere (mA) — one thousandth of an ampere. Common in LED circuits, small motors, and battery drain measurements. Ampere (A) — the SI base unit of electric current. Standard for household appliances (0.5–15A) and automotive systems. Kiloampere (kA) — one thousand amperes. Found in industrial processes, arc welding, lightning strikes (~20–200 kA), and short-circuit calculations.
Common use cases
Electronics — convert between mA component ratings and A power supply specifications. Circuit design — verify current draw across different scales (µA sleep mode, mA active, A peak). Electrical engineering — convert fault current calculations between A and kA. Battery life — calculate consumption in mA or µA for power budgeting. Education — learn SI prefix relationships for electrical current units.
Privacy
All calculations run 100% in your browser. No data is sent to any server.