Welcome to the calculator page for electronics, robotics, and machining. I’m just getting started, so there are only two tools at the moment.

Resistor Color-Band Coding Chart and Calculator

Find the resistance values based on color codes, or find the color codes based on resistance. Shows ohms, kilohms, and megohms.

Find the resistance values based on color codes, or find the color codes based on resistance. Shows ohms, kilohms, and megohms.

Ohm's Law Calculator

Voltage, Current, Resistance, and Power Calculator Uses Ohm's law to calculate volts, amps, ohms, or watts from only two of the four values. Also converts between common metric prefixes (mega, kilo, milli, and micro).

Voltage, Current, Resistance, and Power Calculator Uses Ohm's law to calculate volts, amps, ohms, or watts from only two of the four values. Also converts between common metric prefixes (mega, kilo, milli, and micro).