Electrical Engineering Calculator

Professional online calculators for electrical engineering and circuit calculations

Electrical Engineering Fundamentals

Electrical Fundamentals

Ohm's law, power, energy, charge, resistance

Alternating Current

Phase shift, RMS values, frequency analysis

Household & Energy Costs

Power consumption, energy costs, safety

Circuit Components

Resistor Circuits

Series, parallel and mixed circuits

Capacitor Circuits

Capacitive circuits, charging/discharging

Inductor Circuits

Inductive circuits, magnetic field, self-inductance

LC Circuits

Resonance frequency, filter analysis, oscillators

Semiconductors & Applications

Rectifier Circuits

Diode characteristics, rectification, filter circuits

Loudspeaker Calculations

Crossover networks, audio technology, speaker circuits

About Electrical Engineering Calculators

Our electrical engineering calculators support you in solving electrical problems - from simple Ohmic calculations to complex AC analysis and circuit calculations.

Fundamentals - Ohm's law, power
AC - Frequency, phase shift
Circuits - Resistors, capacitors, inductors

Semiconductors - Diodes, rectifiers
Audio - Speakers, crossovers
Household - Energy costs, consumption

Calculator Categories

Fundamentals

Ohm's Law: U = R × I
Power: P = U × I
Energy: W = P × t

Circuits

Series: R_total = R₁ + R₂ + ...
Parallel: 1/R_total = 1/R₁ + 1/R₂ + ...
LC Oscillator: f₀ = 1/(2π√LC)

Note: All calculators use SI units (Volt, Ampere, Ohm, Watt). For AC calculations, RMS values are used unless otherwise specified.

Quick Reference

Important Formulas

Ohm's Law:
U = R × I

Power:
P = U × I = I² × R = U²/R

Energy:
W = P × t

AC:
U_RMS = U_max / √2

SI Units

Voltage: Volt (V)
Current: Ampere (A)
Resistance: Ohm (Ω)

Power: Watt (W)
Energy: Joule (J), kWh
Frequency: Hertz (Hz)