June 9, 2026 Resonant Frequency Calculator LC Circuit Spring‑Mass Inductance (L) ? H mH µH nH pH Capacitance (C) ? F mF µF nF pF Mass (m) ? kg g mg lb oz Spring Constant (k) ? N/m N/mm lb/in lb/ft Frequency unit Hz kHz MHz GHz Advanced Options Resistance (R) ? Ω kΩ MΩ Circuit Type Series RLC Parallel RLC Damping Coeff. (c) ? N·s/m lb·s/in kg/s Calculate Reset Copy f₀ Download PDF Resonant Frequency (f₀) Angular Frequency (ω) Period (T) Characteristic Impedance (Z₀) Quality Factor (Q) Bandwidth (Δf) Damping Ratio (ζ) Damped Frequency (ωd) Formula