Free online tool to decode resistor color bands and calculate resistance values. Simple, accurate, and easy to use.
Calculate resistor values quickly and accurately with our free online tool.
Resistance: -
Tolerance: -
Temperature Coefficient: -
| Color | Value | Multiplier | Tolerance | Temp. Coeff. |
|---|---|---|---|---|
| Black | 0 | ×1Ω | - | 250ppm/°C |
| Brown | 1 | ×10Ω | ±1% | 100ppm/°C |
| Red | 2 | ×100Ω | ±2% | 50ppm/°C |
| Orange | 3 | ×1KΩ | ±0.05% | 15ppm/°C |
| Yellow | 4 | ×10KΩ | ±0.02% | 25ppm/°C |
| Green | 5 | ×100KΩ | ±0.5% | 20ppm/°C |
| Blue | 6 | ×1MΩ | ±0.25% | 10ppm/°C |
| Violet | 7 | ×10MΩ | ±0.1% | 5ppm/°C |
| Gray | 8 | ×100MΩ | ±0.01% | 1ppm/°C |
| White | 9 | ×1GΩ | - | - |
| Gold | - | ×0.1Ω | ±5% | - |
| Silver | - | ×0.01Ω | ±10% | - |
Welcome to ResistorColors.org, your trusted online tool for decoding resistor color bands and calculating resistance values. Our calculator is designed to help electronics enthusiasts, students, and professionals quickly determine resistor values with precision and ease.
Simply select the number of bands on your resistor and choose the corresponding colors. Our calculator will instantly display the resistance value, tolerance, and temperature coefficient (for 6-band resistors). The visual representation helps verify your selection.
Our calculator provides precise calculations following industry standards for resistor color coding.
Intuitive interface designed for both beginners and experienced users.
Learn about resistor color codes while calculating values with our comprehensive guide.
Access our calculator anytime, anywhere, completely free of charge.
Use our free calculator to quickly and accurately determine resistor values. No registration required.