6 Band Resistor Color Code Calculator & PPM Chart
The 6-band resistor color code adds a sixth stripe denoting the Temperature Coefficient of Resistance (TCR) expressed in parts per million per Kelvin (ppm/K). It is crucial for high-temperature stability and precision RF applications.
How to Read 6 Band Resistor Color Code Calculator & PPM Chart
Hold the resistor so the tolerance band (Gold ±5% or Silver ±10%, separated by a wider physical gap) is positioned on the right. Read the remaining colored stripes from left to right:
| Band Position | Function | Permitted Values |
|---|---|---|
| Band 1 | 1st Significant Digit | 0 to 9 (Black to White) |
| Band 2 | 2nd Significant Digit | 0 to 9 (Black to White) |
| Band 3 | 3rd Significant Digit | 0 to 9 (Precision Mantissa) |
| Band 4 | Multiplier (Power of 10) | 10⁻² (Silver) to 10⁹ (White) |
| Band 5 | Tolerance Percentage | ±5% (Gold) to ±0.05% (Grey) |
| Band 6 | Temperature Coefficient | ppm/K (e.g. 100 Brown, 50 Red) |
- 1.Identify the Gap: Resistors feature a wider physical gap separating the multiplier/digits from the tolerance band.
- 2.Identify Tolerance Metal: A Gold or Silver band is never a first digit; it always marks the tolerance band on the right.
- 3.Combine Mantissa & Multiply: Group the digit numbers together (e.g. Red 2 + Red 2 = 22) and multiply by the multiplier color (Orange ×1,000 = 22 kΩ).
Resistor Color Code Calculator
Select band count and click colors below to calculate resistance and tolerance.
Select Band Colors
Click any swatch to change value
Reverse Resistor Color Code Lookup
Enter resistance value in Ohms (Ω) to determine the exact color bands.
Enter Target Resistance
Live ValidationCommon Questions About 6 Band Resistor Color Code Calculator & PPM Chart
What does the 6th band on a resistor mean?▼
The sixth band specifies the Temperature Coefficient of Resistance (TCR) in ppm/K (parts per million per Kelvin). It reveals how many parts per million the resistance shifts for each 1°C change in temperature.
What does a Brown 6th band signify?▼
A Brown 6th band signifies a temperature coefficient of 100 ppm/K (0.01% drift per °C), which is the standard rating for precision metal film resistors.
Complete Resistor Color Code Chart
View the full 12-color lookup matrix covering significant figures 0–9, multipliers from 0.01 to 1G, and tolerance bands from ±0.05% to ±20%. Includes searchable values and instant CSV export.
How to Read & Calculate Resistor Bands
Learn step-by-step reading rules, standard E-series decade values (E12, E24, E96), memory mnemonics, and surface-mount (SMD) 3-digit and EIA-96 code conversion formulas.
Popular Resistor Color Code Guides & Calculators
Jump directly to pre-calculated stripe guides for common standard resistances or explore individual band systems.