Capacitive reactance of 100nF at 1kHz = 1.59kΩ
Worked answer for the reactance of a 100nF capacitor at 1kHz, using Xc = 1 / (2πfC).
Xc (capacitive reactance) 1.59kΩ 100nF capacitor · 1kHz
| Frequency (f) | 1kHz |
| Capacitance (C) | 100nF |
| Formula | Xc = 1 / (2πfC) |
| Reactance (Xc) | 1.59kΩ |
Capacitive reactance falls as frequency rises — a capacitor passes high frequencies more easily and blocks DC (Xc → ∞ as f → 0).
Different values? Change the frequency, capacitor or inductor in the interactive tool:
Open the Reactance Calculator →Disclaimer: This is an ideal-component reference value. Real capacitors have parasitics (ESR, ESL, lead inductance) that shift the effective reactance — especially near self-resonance. Verify against the part datasheet for precise design.