Instantly decode resistor color bands to find resistance, tolerance, and TCR. Also calculates series/parallel resistance and voltage dividers. Supports E-series validation and multiple languages.
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Updated September 2026
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This app serves as a pocket reference for electrical engineering, covering fundamental RLC circuit topics. It includes calculations for impedance, Ohm's law, and resistor color codes, along with circuit solvers. It is accessible offline and contains no ads or in-app purchases.