Resistor Color Code Calculator
Decode 4-band, 5-band, and 6-band resistors or find the color bands for a known resistance value.
Calculator Mode
Resistor Color Bands
Find Resistor Color Bands
Result
Resistance
4.7 kΩ
±5%
Resistance
4.7 kΩ
Tolerance
±5%
Minimum
4.465 kΩ
Maximum
4.935 kΩ
Temperature Coefficient
—
Color Code Details
| Band | Color | Function |
|---|
Calculation Steps
Select resistor colors and click Calculate.
Resistor Color Code Formula
4-Band Resistor:
Resistance=(Band 1 × 10 + Band 2) × Multiplier
Resistance=(Band 1 × 10 + Band 2) × Multiplier
5-Band Resistor:
Resistance=(Band 1 × 100 + Band 2 × 10 + Band 3) × Multiplier
Resistance=(Band 1 × 100 + Band 2 × 10 + Band 3) × Multiplier
6-Band Resistor:
Resistance=(Band 1 × 100 + Band 2 × 10 + Band 3) × Multiplier
The sixth band specifies the temperature coefficient.
Resistance=(Band 1 × 100 + Band 2 × 10 + Band 3) × Multiplier
The sixth band specifies the temperature coefficient.
Minimum Resistance:
Rmin=R × (1 − tolerance)
Rmin=R × (1 − tolerance)
Maximum Resistance:
Rmax=R × (1 + tolerance)
Rmax=R × (1 + tolerance)
Resistor Color Code Chart
| Color | Digit | Multiplier | Tolerance | Temp. Coefficient |
|---|---|---|---|---|
| Black | 0 | ×1 | — | 250 ppm/K |
| Brown | 1 | ×10 | ±1% | 100 ppm/K |
| Red | 2 | ×100 | ±2% | 50 ppm/K |
| Orange | 3 | ×1,000 | — | 15 ppm/K |
| Yellow | 4 | ×10,000 | — | 25 ppm/K |
| Green | 5 | ×100,000 | ±0.5% | 20 ppm/K |
| Blue | 6 | ×1,000,000 | ±0.25% | 10 ppm/K |
| Violet | 7 | ×10,000,000 | ±0.1% | 5 ppm/K |
| Gray | 8 | ×100,000,000 | ±0.05% | 1 ppm/K |
| White | 9 | ×1,000,000,000 | — | — |
| Gold | — | ×0.1 | ±5% | — |
| Silver | — | ×0.01 | ±10% | — |
Example: 4.7 kΩ Resistor
A 4.7 kΩ resistor with ±5% tolerance uses the following 4-band color code:
Yellow=4
Violet=7
Red=×100
Gold=±5%
Resistance=47 × 100
Resistance=4,700 Ω=4.7 kΩ
Violet=7
Red=×100
Gold=±5%
Resistance=47 × 100
Resistance=4,700 Ω=4.7 kΩ