This calculator helps you to calculate time constant of RC circuit. The product of resistance and capacitance values is known as RC Time Constant.

**How to use the calculator?**

- For this calculator, enter the voltage value.
- Enter the capacitance value in micro-farads.
- Enter the load resistance in ohms.
- The calculator would show automatically the calculated value.

**How to calculate RC Time Constant?**

You can calculate the RC Time Constant with the help following formula:

τ = C X R

Example: Let us say you have 12 V supply voltage. The load is of 100 ohms. The time constant would be ** 0.000350 seconds**.