Resistor Color Code 4-Band, 5-Band & 6-Band Calculator
Electronics hobbyists, breadboard prototyping, circuit board repair technicians. Interactive visual resistor simulator that calculates resistance (Ω, kΩ, MΩ), tolerance (%), and temperature coefficient (ppm/K) from colored bands, or generates band colors from typed value.
Step-by-Step Derivation ▼ Show Steps
Calculations adhere to standard electrical engineering physics and National Electrical Code (NFPA 70) regulations.
Engineering Principles & Calculations
This calculator uses the exact mathematical relationships between Number of Bands (4, 5, 6), Color Selections for each band (Black, Brown, Red, Orange, Yellow, Green, Blue, Violet, Gray, White, Gold, Silver) to determine Resistance Value (Ω/kΩ/MΩ), Tolerance Range (Min Ω - Max Ω), TempCo (ppm/K). In practical installations, factors such as ambient raceway temperature, harmonic distortion, duty cycle continuous operation, and conductor impedance must be accounted for by a certified electrician.
Interactive visual resistor simulator that calculates resistance (Ω, kΩ, MΩ), tolerance (%), and temperature coefficient (ppm/K) from colored bands, or generates band colors from typed value.
Typical Application & Industry Guidelines
Electronics hobbyists, breadboard prototyping, circuit board repair technicians.
Resistor Color Code 4-Band, 5-Band & 6-Band Calculator Benchmark Lookup Table
| Color Band | Significant Digit | Multiplier | Tolerance |
|---|---|---|---|
| Black | 0 | 1 (10^0) | -- |
| Brown | 1 | 10 (10^1) | ± 1% |
| Red | 2 | 100 (10^2) | ± 2% |
| Orange | 3 | 1,000 (10^3) | -- |
| Yellow | 4 | 10,000 (10^4) | -- |
| Green | 5 | 100,000 (10^5) | ± 0.5% |
| Blue | 6 | 1,000,000 (10^6) | ± 0.25% |
| Violet | 7 | 10,000,000 (10^7) | ± 0.1% |
| Gold | -- | 0.1 (10^-1) | ± 5% |
| Silver | -- | 0.01 (10^-2) | ± 10% |