Ohm's Law & Power Factor Calculators

Quickly solve Ohm's Law relationships and convert between kVA, kW, and power factor for single-phase and three-phase electrical systems.

2 Calculators Power Wheel Free to Use

Electrical Fundamentals

Enter any 2 of the 4 values (Voltage, Current, Resistance, Power) and calculate the remaining two. Leave the unknowns blank.

V (Voltage)

V = I × R

V = P / I

V = √(P × R)

I (Current)

I = V / R

I = P / V

I = √(P / R)

R (Resistance)

R = V / I

R = V² / P

R = P / I²

P (Power)

P = V × I

P = V² / R

P = I² × R

Electrical Fundamentals

Select phase and enter voltage, then provide any 2 of the remaining 4 values (kVA, kW, Power Factor, Current) to solve for the others.