Engineering Calculators | Electrical, Mechanical, Civil Engineering Tools

Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law (V = I × R). Essential for electrical circuit design and analysis.

Electrical Circuit Analysis Instant Results Professional Grade

V = I × R | P = V × I | R = V ÷ I

Most frequently used engineering calculators

Key formulas used in engineering calculations

Ohm's Law

V = I × R

V = Voltage (Volts)
I = Current (Amps)
R = Resistance (Ohms)

Power Formula

P = V × I = I² × R

P = Power (Watts)
V = Voltage (Volts)
I = Current (Amps)
R = Resistance (Ohms)

Transformer Turns Ratio

V₁/V₂ = N₁/N₂

V₁ = Primary Voltage
V₂ = Secondary Voltage
N₁ = Primary Turns
N₂ = Secondary Turns

Bending Stress

σ = M × y / I

σ = Bending Stress
M = Bending Moment
y = Distance from Neutral Axis
I = Moment of Inertia