Education

Resistor Color Code Decoder

Decode 3-, 4-, 5- and 6-band resistor colours into ohms and tolerance.

Education

Local only

Band colours (left to right)

Everything stays in your browser

Your text is processed on your device — nothing is uploaded to a server.

How it works

Standard IEC 60062 colours. 4-band: 2 digits, multiplier, tolerance; 5-band: 3 digits; 6-band adds temperature coefficient.

Good to know

How do I use it?

Enter your band colours (left to right) and press “Decode”. Check the result, then copy or download it.

How does it work?

Standard IEC 60062 colours. 4-band: 2 digits, multiplier, tolerance; 5-band: 3 digits; 6-band adds temperature coefficient.

Is my data uploaded?

No. Everything is processed in your browser and nothing is sent to a server. No account is needed.