Power Calculator
Calculate electrical power, voltage, current, and resistance using Ohm's Law and power formulas. Perfect for electrical engineering and circuit analysis.
Power Calculations
Note: Provide at least 2 known values to calculate the unknown value.
Common combinations: V+I, V+R, I+R, P+V, P+I, P+R
Power Formulas
Power Formulas
- P = V × I
- P = V² ÷ R
- P = I² × R
Voltage Formulas
- V = P ÷ I
- V = √(P × R)
- V = I × R
Current Formulas
- I = P ÷ V
- I = V ÷ R
- I = √(P ÷ R)