๐จ Resistor Color Code Calculator
Resistance1 kฮฉยฑ 5%
Select the color bands on a resistor to calculate its resistance value and tolerance based on the standard EIA resistor color code. Supports both 4-band and 5-band resistors.
How to use
- Choose 4-band or 5-band mode.
- Select each bandโs color to match your physical resistor.
- The resistance and tolerance are calculated automatically.
FAQ
What color code standard does this use?
It uses the standard EIA resistor color code. The mapping of digit colors (black through white), multiplier colors, and tolerance colors (gold, silver, etc.) is internationally standardized.
Whatโs the difference between 4-band and 5-band?
4-band resistors encode 2 significant digits, while 5-band resistors encode 3 significant digits for higher precision.
What if the colors are hard to distinguish on my resistor?
Lighting conditions and component wear can make colors hard to read. If possible, verify with a multimeter reading.