Electrical Engineering Basics
Online calculators for fundamental electrical calculations
Basic Electrical Calculations
Ohm's Law and Power
Calculate voltage, current, resistance and power
Electric Power
Calculate electrical power from voltage and current
Electric Energy
Calculate electrical energy consumption and costs
Electric Charge
Calculate electric charge from current and time
Circuit Analysis & Components
Wire Resistance
Calculate resistance based on material and geometry
Voltage Drop
Calculate voltage drop in wires and cables
Capacitor Capacitance
Calculate capacitance for various configurations
Internal Resistance
Calculate internal resistance of power sources
Advanced Calculations
Temperature Drift
Calculate resistance changes with temperature
Temperature Coefficients
Reference table of temperature coefficients
Coulomb's Law
Calculate electrostatic force between charges
Battery Capacity
Calculate battery capacity, runtime and energy
Signal Processing
Decibel Converter
Convert between decibels, voltage, and power
Decibel - Factor
Convert decibel values to linear factors
About Electrical Engineering Basics
Our electrical engineering calculators provide accurate results for both educational and professional use. All calculations are based on standard electrical engineering formulas and principles.
- Basics - Ohm's law, power, energy
- Circuits - Wire resistance, voltage drop
- Advanced - Temperature effects, batteries
- Signal - Decibel conversions
- Accurate - Professional precision
- Free - Educational use
Tip: Start with basic calculations like Ohm's law, then explore
more advanced topics like temperature effects and signal processing.
Important Formulas
Basic Laws
U = R × I
P = U × I = I² × R
W = P × t
Resistance
R = ρ × l / A
R(T) = R₀[1 + α(T-T₀)]
Safety Note
Always follow proper electrical safety procedures when working
with electrical circuits and high voltages.