Resistor Calc Toolbox
Calculate • Decode • Build
Straightforward electronics tools for common LED and resistor calculations, designed to give you the answer without making a simple project feel complicated.
- Calculate the resistor needed for an LED circuit
- Decode standard 4-band resistor color codes
- Enter ohms and get the matching resistor colors
- Clear results with a simple, workbench-friendly interface
See it in action
A closer look at the three calculators in the app.
