Electrical & Electronics

Ohm's law, LED resistors, electricity costs. {0} tools available.

Core Electrical

LED Resistor Calculator

Find the right resistor value for any LED circuit

Ohm's Law Calculator

Calculate V, I, R, and P from any two known values

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Resistor Color Code Calculator

Decode resistor color bands to resistance value

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Voltage Drop Calculator

Calculate wire voltage drop and NEC compliance

Wire Gauge Calculator (AWG)

Find the right AWG wire size for your circuit

Circuit Design

Battery Life Calculator

Estimate how long a battery will last under load

Electricity Cost Calculator

Estimate electricity costs for any appliance or device

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