Calculator category

Electrical Calculators

Resistance, power, speakers, LEDs and workshop electronics.

LED Resistor Calculator

Calculate resistance, current and resistor wattage for an LED circuit.

Calculate the nominal load of matching speakers in common wiring arrangements.

Find voltage, current, resistance and power from any two known values.

Estimate copper wire voltage loss, load voltage and wire power loss.

Estimate runtime from voltage, capacity, load, and efficiency.

Estimate a copper wire gauge from current, distance, voltage, and allowable voltage drop.

Calculate total resistance for resistor values connected in series or parallel.