RC Filter Simulator
Design and test RC (resistor-capacitor) filter circuits instantly in your browser — no installation, no account required. VoltForge simulates real charge and discharge behavior so you can see exactly how your RC circuit responds over time.
How an RC filter works
An RC filter uses a resistor and capacitor in series to shape how a signal changes over time. The resistor and capacitor values together set the time constant, controlling how quickly the capacitor charges toward the source voltage.
Try it now
Open the simulator below with a pre-built RC filter ready to edit, or start from a blank canvas.