Which resistor should I use?

Resistor values aren't exact and you can't get one for every single possible value. This tool lets you find a resistor closest to the value that you're looking for

What is this resistor?

This tool lets you work out what the colour bands mean so that you can work out the value of any resistor

Click on the bands below to change their colour:

Band 1
Band 2
Band 3
Band 4

Can you decipher these resistor bands?

This tool lets you check if you've understood how to interpret the colour bands on a resistor

Fed up with ads?

Complete all levels in this quiz and you'll be rewarded with an ad-free experience.