Capacitor Charge Time Calculator
Calculate RC time constant and charge/discharge times for capacitor circuits.
Time Constant (τ = R × C)
1.00 ms
63% charged
1.00 ms
95% charged
3.00 ms
99% charged
5.00 ms
Quick Reference
R = 1.00 kΩ × C = 0.00 mF = τ = 1.00 ms
V(t) = V₀ × (1 - e^(-t/τ))
τ = R × C