Current Calculator

Calculate electrical current using Ohm's Law and power formulas. Enter any two known values to find the current and other electrical parameters.

Current Calculation Formulas

I = V / R
Ohm's Law
I = P / V
Power Formula
I = √(P / R)
Power & Resistance

Note: Enter any two values to calculate the current and other parameters.

About Electrical Current

Electrical current is the flow of electric charge through a conductor. It is measured in amperes (A) and represents the amount of charge flowing past a point per unit time.

Current Types:

  • Direct Current (DC): Current flows in one direction
  • Alternating Current (AC): Current changes direction periodically

Current Units:

  • Ampere (A): Base unit of electric current
  • Milliampere (mA): 1/1000 of an ampere
  • Microampere (μA): 1/1,000,000 of an ampere
  • Kiloampere (kA): 1,000 amperes

Applications:

  • Circuit design and analysis
  • Component selection and sizing
  • Safety calculations
  • Power consumption analysis