Calculate reactance X_{C}
Calculator and formulas for calculating the reactance of a capacitor
On this page you can calculate the reactance of a capacitor, the capacitance or the corresponding frequency. Two of the values must be known to calculate the third.

Formula for calculating reactance X_{C}
The reactance can be calculated using the following formula. The frequency \(\displaystyle f \)and the capacity \(\displaystyle C \) must be known.
\(\displaystyle X_C=\frac{1}{2 ·\ π · f · C }\)
Capacity calculation formula
The capacity is calculated according to the following formula. The frequency \(\displaystyle f \) and the reactance \(\displaystyle X_C \) must be known.
\(\displaystyle C=\frac{1}{2 ·\ π · f · XC }\)
Formula for calculating the frequency
The frequency is calculated according to the following formula. The reactance \(\displaystyle X_C \) and the capacity \(\displaystyle C \) must be known.
\(\displaystyle f=\frac{1}{2 ·\ π · X_C · C }\)
Capacitor functions
Series connection with capacitorsSeries connection with 2 capacitors
Reactance Xc of a capacitor
Time constant of an R/C circuit
Capacitor charging voltage
Capacitor discharge voltage
R/C for the charging voltage
Series circuit R/C
Parallel circuit R/C
Low passfilter R/C
High passfilter R/C
Integrator R/C
Differentiator R/C
Cutofffrequency R,C
R and C for a given impedance
