Read any 4-band or 5-band resistor: choose the colours and get the resistance with its lowest and highest values.
loading toolHow to use the resistor colour code calculator
- Type your numbers in the boxes (pick your currency or units if asked).
- The answer updates as you type: no button to press.
- Copy the result, or share it on WhatsApp with one tap.
Questions
Which end do I start from?
Start from the end where the bands are bunched together. A gold or silver band is always last.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
