Resistance calculation tool
Calculation can be performed by identifying the resistor color ring or directly inputting the resistance value. It supports four-color ring and five-color ring resistance calculations, as well as resistor series and parallel calculations.
Four color ring resistor
Five color ring resistor
Series and parallel calculation
Example: 12.4KΩ ±1%
Color ring resistance identification
Resistor preview
Select color wheel to view preview
Calculation Results
Resistance
--
Accuracy
--
Resistor color ring comparison table
Numerical color wheel (1st-2nd digit/1st-3rd digit)
Black - 0
Brown - 1
Red - 2
Orange - 3
Yellow - 4
Green - 5
Blue - 6
Purple - 7
Ash - 8
White - 9
Magnification color wheel (multiplier)
Black - x1Ω
Brown - x10Ω
Red - x100Ω
Orange - x1KΩ
Yellow - x10KΩ
Green - x100KΩ
Blue - x1MΩ
Purple - x10MΩ
Gold - x0.1Ω
Silver - x0.01Ω
Accuracy Color Circle (Error)
Brown - ±1%
Red - ±2%
Gold - ±5%
Silver - ±10%
Colorless - ±20%