ENGINEERING TOOLS
DC & AC Circuit Analysis

Ohm's Law &
Power Calculator

Instantly compute voltage, current, resistance and power. Supports series and parallel circuit configurations with live formula display.

Input Parameters
Solve For
V = I × R V = P / I V = √(P×R) I = V / R I = P / V I = √(P/R) R = V / I R = V²/ P R = P / I² P = V × I P = I² × R P = V² / R OHM

Awaiting Input

Select what to solve for, enter any two known values, and hit Calculate.