Capacitive Reactance Calculator
Calculate a capacitor's reactance at a given frequency.
Result
Complete the fields to calculate.
Formula and method
XC = 1 / (2πfC)
Important assumptions
This ideal model omits ESR, tolerance, and parasitic inductance.
Frequently asked questions
Does the calculation run locally?
Yes. Values are processed in your browser and are not sent to a server.
Can I use it for a real installation?
Use it as an educational reference and verify components, tolerances, safety, and applicable code with technical documentation or a qualified person.
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