# Capacitor Energy (E) and RC Time Constant

Online calculator to find the energy stored in a capacitor (E) and the time constant (RC) based on the voltage across the capacitor

Use this online calculator to find the energy stored in a capacitor (E) and the time constant (RC) based on the voltage across the capacitor. With the capacitor energy and time constant calculator, you can easily calculate two different values. Firstly, you can determine the time constant (T) by inputting the values for capacitance (C) and load resistance (R). Secondly, you can determine the energy stored in the capacitor (E) by entering the voltage (V), capacitance, and load resistance values.

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- E = (V² x C) / 2
- T = R x C

**where,**

- E =Stored Energy (Joules)
- T = Time Constant (S)
- V = Voltage (V)
- C = Capacitance (uF)
- R = Load Resistance (Ohms)