4-Band, 5-Band & 6-Band Resistor Color Code Calculator
Decode electronic resistor color bands, resistance values (Ω, kΩ, MΩ), and tolerances.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use 4-Band, 5-Band & 6-Band Resistor Color Code Calculator
Choose 4-Band, 5-Band, or 6-Band resistor configuration.
Select colors for significant digits, multiplier band, and tolerance band.
View total Ohms (Ω, kΩ, MΩ), minimum/maximum tolerance range, and copy specs.
Frequently Asked Questions
How do you read a 4-band resistor?
Band 1 is the first digit, Band 2 is the second digit, Band 3 is the multiplier (10^x), and Band 4 is the tolerance percentage.
What does the 6th band on a resistor represent?
The 6th band specifies the Temperature Coefficient of Resistance (TCR) in parts per million per Kelvin (PPM/K).
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