Resistor Color Code Calculator
Pick the four color bands to decode the resistor's resistance, tolerance, and value range.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator decodes a 4-band resistor color code using the standard EIA color chart: the first two bands give the significant digits, the third is the multiplier, and the fourth is the tolerance, combining to give the resistance in ohms (Ω), kilohms (kΩ) or megohms (MΩ).
Electronics hobbyists, technicians and students use it instead of memorizing the color chart or reaching for a multimeter, especially when sorting a mixed bin of resistors. Pick the four band colors to instantly see the resistance value, tolerance percentage, and the minimum-maximum range that tolerance allows.
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