CapacitorCalc

Easily calculate the minimum required capacitor value for your AC‑DC transformer circuit. This app helps you determine: • The minimum capacitance needed (in pF, nF, µF, mF or F) • The minimum ripple voltage across the capacitor Just enter the voltage, current, and frequency of your transformer — and get instant results. Great for electronics enthusiasts, students, and hobbyists working with power supplies or rectifier circuits.