Resistor Color Code Calculator
Decode resistor color bands (3, 4, 5, 6-band) to resistance value — or enter a value to find the bands. Includes tolerance and temperature coefficient.
Number of bands:
D1
D2
×10ⁿ
±%
Resistance
1 kΩ
±5% → 950 Ω – 1.05 kΩ
Color reference
| Color | Digit | Multiplier | Tolerance | ppm/°C |
|---|---|---|---|---|
| Black | 0 | ×1 | — | 250 |
| Brown | 1 | ×10 | ±1% | 100 |
| Red | 2 | ×100 | ±2% | 50 |
| Orange | 3 | ×1,000 | — | 15 |
| Yellow | 4 | ×10,000 | — | 25 |
| Green | 5 | ×100,000 | ±0.5% | 20 |
| Blue | 6 | ×1,000,000 | ±0.25% | 10 |
| Violet | 7 | ×10,000,000 | ±0.1% | 5 |
| Gray | 8 | ×100,000,000 | ±0.05% | 1 |
| White | 9 | ×1,000,000,000 | — | — |
| Gold | — | ×0.1 | ±5% | — |
| Silver | — | ×0.01 | ±10% | — |
| None | — | — | ±20% | — |
How to read a resistor
Hold the resistor with the tolerance band (usually gold or silver, and often wider or separated) on the right. Read colors from left to right. For 4-band: first two bands are digits, third is multiplier, fourth is tolerance. For 5/6-band: first three are digits, then multiplier, tolerance, and optional ppm/°C (temperature coefficient).
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