Capacitor Charge Calculator

Calculate RC circuit charge and discharge time constants. Enter resistance, capacitance, and supply voltage to find time to reach target percentage, with a full time constants table showing voltage at 1τ through 5τ.

How to Use Capacitor Charge Calculator

Enter resistance with unit, capacitance with unit, supply voltage, target percentage, and select charge or discharge mode. Click Calculate to see the time constant, time to target, and a full 1τ-5τ table.

Step-by-Step Instructions

  1. Enter resistance and select unit (Ω, kΩ, MΩ)
  2. Enter capacitance and select unit (F, mF, μF, nF, pF)
  3. Set supply voltage and target percentage
  4. Select charge or discharge mode and click Calculate

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