Diode Calculators: Free Rectifier & LED Circuit Design Tools

Design diode-based circuits with our free online diode calculators. Whether you are calculating the forward voltage drop for a silicon rectifier, sizing a current-limiting resistor for an LED string, or determining output ripple for a bridge rectifier, these tools deliver precise results instantly. Enter your input voltage, load current, diode type, and frequency to receive rectified output voltage, peak inverse voltage requirements, power dissipation, and heat sink sizing data. Each calculator includes Schottky vs silicon comparison, zener regulator design, voltage doubler configurations, and flyback diode selection for inductive loads. Students, hobbyists, and power supply designers use these tools to eliminate guesswork when building rectifiers, clamps, and protection circuits. From half-wave to full-wave bridge rectifiers, from signal diodes to high-power rectifiers, our diode calculators cover every semiconductor junction application. No signup required—access from any device and design reliable diode circuits with confidence.