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LED Resistor Calculator
Find the series resistor for one or more LEDs
📖 LED Resistor Calculator
Series LED resistor value: R = (Vsupply − N × Vf) ÷ Iled. Choose the next-highest standard resistance and verify power dissipation.
📊 Result
💡 Tips & Information
- LED Resistor Calculator uses standard engineering formulas; always verify with project requirements.
- Keep units consistent across all inputs to avoid conversion errors.
- Field conditions, tolerances, and safety factors may require additional adjustments.