Resistor Color Code Calculator
Decode resistor values from color bands. Supports 4-band, 5-band, and 6-band resistors.
Embed this toolDigit
Digit
Multiplier
Tolerance
Resistance
1.00 Ω
Tolerance: ±5%
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Resistor Color Code Chart
The resistor color code was developed in the early 1920s by the Radio Manufacturers Association. It remains the standard method for marking axial resistors today.
| Color | Digit | Multiplier | Tolerance |
|---|---|---|---|
| Black | 0 | ×1 | — |
| Brown | 1 | ×10 | ±1% |
| Red | 2 | ×100 | ±2% |
| Orange | 3 | ×1,000 | — |
| Yellow | 4 | ×10,000 | — |
| Green | 5 | ×100,000 | ±0.5% |
| Blue | 6 | ×1,000,000 | ±0.25% |
| Violet | 7 | ×10,000,000 | ±0.1% |
| Grey | 8 | ×100,000,000 | ±0.05% |
| White | 9 | ×1,000,000,000 | — |
| Gold | — | ×0.1 | ±5% |
| Silver | — | ×0.01 | ±10% |
Frequently Asked Questions
Resistors use colored bands to indicate their resistance value and tolerance. Each color corresponds to a digit, multiplier, or tolerance percentage. Reading from left to right, the first bands give digits, the next gives the multiplier, and the last gives tolerance.
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