ELECTRONICS CALCULATOR
Resistor Color Calculator
Select the resistor color bands or enter a known resistance value to calculate the resistor value instantly.
Current Resistor
8.70 kΩ
Tolerance ±5%
Band 1
Gray
Band 2
Violet
Multiplier
Red
Tolerance
Gold
1. SELECT BAND COLORS
2. ENTER KNOWN VALUE
Enter a resistance value and the calculator will automatically select the closest color bands.
Calculated Resistance
8.70 kΩ
Tolerance: ±5%
How to Read a Resistor
The first two color bands represent the first two digits of the resistance value. The third band determines the multiplier, while the fourth band represents the tolerance.
Band 1
First digit
Band 2
Second digit
Band 3
Multiplier
Band 4
Tolerance