Electrical engineering toolbox

Resistor Color Code

Free resistor color code calculator. Decode 4-band and 5-band resistors or find the bands for any value. No signup.

About this calculator

Free resistor color code calculator. Decode 4-band and 5-band resistors or find the bands for any value. No signup.

For design, installation, or safety decisions, verify assumptions against the applicable code edition, equipment documentation, and site requirements.

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