Electrical Engineering
Circuits, components, power & wiring tools
Ohm's Law Calculator
Solve V, I, R or P from any two values
Voltage Divider Calculator
Compute output voltage of a resistive divider
Current Divider Calculator
Compute branch current in parallel resistors
Resistor Color Code Decoder
Decode 4, 5 and 6-band resistor color codes
Resistor Series/Parallel Calculator
Equivalent resistance for any network
Capacitor Calculator
Energy, charge and impedance of a capacitor
Inductor Calculator
Energy stored and reactance of an inductor
RC Time Constant Calculator
Tau, charge & discharge of RC circuits
LC Resonance Calculator
Resonant frequency of LC tank circuits
Power Factor Calculator
Real, reactive, apparent power & PF correction
Three-Phase Power Calculator
Star/Delta voltages, currents and power
Transformer Ratio Calculator
Turns ratio, voltage and current relations
Wire Gauge Current Capacity
AWG ampacity reference tables
Fuse Rating Calculator
Select fuse rating for a load
PCB Trace Current Calculator
IPC-2221 trace width for current
Heat Sink Thermal Calculator
Thermal resistance and junction temperature