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🧮 Resistor series & parallel calculator

Choose series or parallel, pick 2–4 resistors, drag each log-scale slider — watch the SVG circuit redraw and the total resistance update instantly. Shows the formula, the minimum resistor in parallel, and the sum for series.

Maddy, co-founder of Little Bird

Need help? We're here for you!

Hi, I'm Maddy. My team and I are ready to help with your order or any questions.