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. Zero egress.
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.
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.
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.
The 6th band specifies the Temperature Coefficient of Resistance (TCR) in parts per million per Kelvin (PPM/K).
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