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Handy Electrical Engineering Calculators

Ohm's Law - Voltage/Current/Resistance/Power CalculatorTuned Resistance/Capacitance Circuit CalculatorTuned Capacitance/Inductance Circuit CalculatorZener Dropping Resistor CalculatorParallel Resistance CalculatorResistor/Capacitor Colour Codes
Ohm's Law - Voltage/Current/Resistance/Power Calculator
Enter any TWO of the following values, then press the SOLVE button:
Voltage (Volts)
Current (Amps)
Resistance (Ohms)
Power(Watts)
Tuned Resistance/Capacitance Circuit Calculator
Enter any TWO of the following values, then press the SOLVE button:
Resistance (Ohms)
Frequency (Hz)
Capacitance (uF)
Tuned Capacitance/Inductance Circuit Calculator
Enter any TWO of the following values, then press the SOLVE button:
Capacitance (uF)
Frequency (Hz)
Inductance(H)
Zener Dropping Resistor Calculator
Enter: Input(Volts), Zener(Volts), Load(mA), Then Press the SOLVE button:
Input(Volts)
Zener(Volts)
Load(mA)
R(Ohms)
R(Watts)
Zener(Watts)
Parallel Resistance Calculator
Enter any TWO of the following values, then press the SOLVE button:
R1 (Ohms)

R2 (Ohms)
R Total (Ohms)
Resistor/Capacitor Colour Codes

Band One
Band Two
Band Three
Tolerance