Resistor Color Code Decoder

Clean futuristic • 4 / 5 / 6 band • Real-time

Decode resistor colors — instantly.

Soft cream background with subtle cyan neon accents — modern, readable and friendly. Click a band to edit color, get resistance, tolerance and TCR (6-band) live.

Live results • keyboard accessible
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Palette
Tap a swatch to apply to selected band

Decoder Controls

Accessible · Responsive
Resistance
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Tolerance
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Multiplier
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TCR (6-band)
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Current assignment

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Download Extension

Chrome Extension • hosted on Google Drive
Download the Chrome Extension from Google Drive and follow the instructions inside.
Magic resistor folder

About resistor color codes

Color bands encode digits, multipliers and tolerances. Use this tool to visually assign band colors and get instant calculations.

  • 4-band: digit, digit, multiplier, tolerance
  • 5-band: digit, digit, digit, multiplier, tolerance
  • 6-band: 5-band + temperature coefficient (TCR)
ColorDigitMultiplierToleranceTCR