Resistor Color Code Calculator
Select color bands to decode resistor value, tolerance, and min/max range.
Color Band Decoder
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Formulas
4-Band Formula
R = (10·D₁ + D₂) × Multiplier
5-Band Formula
R = (100·D₁ + 10·D₂ + D₃) × Multiplier
5-band resistors offer tighter tolerances (1%, 0.5%, etc.) and are common in precision applications. The tolerance band is always last.
Color Reference
| Color | Digit | Mult. | Tol. |
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