LED Series Current-Limiting Resistor & Power Dissipation Calculator (85 mA Forward Current)
Precision calculator for LED circuits driven at 85 milliAmps forward current. Calculate real-time metrics with formulas, automatic units handling, and instant results.
Formula & Calculation Logic
R = (V_supply - V_forward) / I_led, P = I² × R
Inputs used by this tool
Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.
Input type: number
Input type: number
Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.