Electrical Engineering Calculators

Explore our collection of online calculators designed for electrical engineers and students. Instantly calculate Ohm’s Law, Voltage Drop, Power Factor, and more with accurate, professional-grade tools.

Ohm's Law Calculator

Calculate V, I, R, P with any two known values. Automatic cross-calculation between all parameters.

Voltage Drop Calculator

Single-phase and three-phase circuits. Wire gauge selection and NEC compliance.

Power Factor Correction Calculator

AC circuit analysis, capacitor sizing for PF correction, multiple input modes.

AC/DC Current Calculator

Three-phase and single-phase calculations. Power-to-current and current-to-power modes.

Resistor Color Code Calculator

4, 5, and 6-band resistor support. Bidirectional calculation and tolerance info.

Transformer Turns Ratio Calculator

Step-up/step-down transformer design. Voltage, current, and turns ratio analysis.

Capacitor/Inductor Reactance Calculator

XL = 2πfL, XC = 1/(2πfC) calculations, LC resonance, unit conversions.

Series/Parallel Resistance/Capacitance Calculator

Dynamic component addition/removal. Full V, I, P analysis for resistors and capacitors.