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The one handy app for electrical engineering calculation.
This app contains not only resistor color code and capacitor code calculators but also electrical filter, attenuator, rectifier, LC oscillator, RF, PCB trace, cable, Ohm's Law, skin effect, Lumen Candela conversion, Delta Y Conversion, and many other handy calculators.
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What's New in Resistor Code Calculators
1.12
July 1, 2026
Addition of inductor code calculator, UI refinement, Ohm's law calculator revision









