ONE FORMULA, ONE ANSWER
LC Resonance Frequency Calculator
Check the ideal resonance frequency for a filter or resonance experiment. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Ideal LC resonance frequency f₀
Enter values and select Calculate.
f₀ = 1 / (2π √(L C))
Assumptions
Use L,C>0. The result describes ideal LC resonance or series RLC current resonance. It is not the damped natural frequency or a prediction including real parallel-circuit losses and parasitic components.
Displayed values are floating-point approximations. Measurement uncertainty and design safety factors are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
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