Resistor Color Code Calculator
Decode resistor color bands to determine resistance values and tolerances
Resistor Color Code Calculator
Decode resistor color bands to determine resistance values and tolerances
Color Band Selection
Brown
Black
Red
Gold
Visual Resistor
Resistance Value
Color Code: Brown - Black - Red - Gold
1.00 kΩ
Nominal Value
±5%
Tolerance
950.00 Ω
Minimum
1.05 kΩ
Maximum
Detailed Breakdown
Calculation
Significant Digits: 10
Multiplier: ×100
Result: 1000 Ω
Tolerance Range
Tolerance: ±5%
Min Value: 950.00 Ω
Max Value: 1.05 kΩ
Reverse Lookup
Enter a resistance value to find possible color code combinations.
About Resistor Color Codes
Resistor color codes use colored bands to indicate resistance values, tolerance, and sometimes temperature coefficient.
Band Types:
- 4-band: 2 digits + multiplier + tolerance
- 5-band: 3 digits + multiplier + tolerance
- 6-band: 3 digits + multiplier + tolerance + temp coeff
Color Reference
Black
0 Brown
1 Red
2 Orange
3 Yellow
4 Green
5 Blue
6 Violet
7 Gray
8 White
9 Gold
- Silver
-Reading Tips
• Read bands from left to right
• Tolerance band is usually on the right
• Gold/silver bands are never first digits
• Look for wider spacing before tolerance band
• Use good lighting to distinguish colors
Select Colors
Brown
Black
Red
Gold
Visual Resistor
Result
1.00 kΩ
±5%
950.00 Ω
Minimum
1.05 kΩ
Maximum
Reverse Lookup
Color Reference
Black 0
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
Gray 8
White 9
Gold -
Silver -
Tips
• Read bands left to right
• Tolerance band usually on right
• Gold/silver never first digits
• Use good lighting for colors