Capacitor discharge
Time to reach a target capacitor voltage, or resistance needed for a specified time.
Inputs
Calculations run in your browser. Your input values are not submitted or saved.
Results
- Resistance
- 10000 Ω
- Time
- 23.0258509 s
- Initial energy
- 1.25 J
- Initial resistor power
- 0.25 W
This tool does not certify circuit safety. Isolate power and measure actual voltage with suitable equipment; dielectric absorption can cause voltage to return.
Formula & guidance
V(t)=V0 exp(−t/RC); t=RC ln(V0/Vt)
This tool does not certify circuit safety. Isolate power and measure actual voltage with suitable equipment; dielectric absorption can cause voltage to return.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.