Resistor Color Code Calculator
Calculate resistance value from color bands
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📊 Result Chart
About Resistor Color Code Calculator
What do colored bands on resistors mean? Don't memorize the chart — select colors and get resistance value and tolerance instantly. Supports 4-band and 5-band.
How to Use
- Select band count (4 or 5)
- Choose each band color
- See calculated resistance and tolerance
FAQ
What do colors mean?
Black(0) Brown(1) Red(2) Orange(3) Yellow(4) Green(5) Blue(6) Violet(7) Gray(8) White(9). Gold/Silver=multiplier/tolerance.
4-band vs 5-band?
4-band: 2 digits + multiplier + tolerance. 5-band: 3 digits + multiplier + tolerance (higher precision).