Capacitive reactance of 1µF at 1MHz = 0.159Ω
Worked answer for the reactance of a 1µF capacitor at 1MHz, using Xc = 1 / (2πfC).
Xc (capacitive reactance) 0.159Ω 1µF capacitor · 1MHz
| Frequency (f) | 1MHz |
| Capacitance (C) | 1µF |
| Formula | Xc = 1 / (2πfC) |
| Reactance (Xc) | 0.159Ω |
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.