RC Time Constant Calculator

Last updated: 2026-08-24

RC Time Constant Calculator — Free online rc time constant calculator. Enter resistance and capacitance to get instant results.
Inputs
Result
Enter values and press Calculate

How to use it

  1. Identify The values of input
  2. Apply The formula correspondiente
  3. Realizar The calculation
  4. Obtain The 2 results

Common mistakes

  • ⚠️ Not Convert µF a F
  • ⚠️ Confusing Ï„ with time of carga total
  • ⚠️ Not Use 5Ï„ to carga completa

Worked example

Example of circuito electrónico

Ï„ = RC. time to cargar to the 63.2% of the voltaje final.