Plan resonant circuits with quick unit conversions today. Review frequency, period, reactance, and optional Q. Built for listings, sourcing, testing, bundles, and store operations.
| Mode | Inductance | Capacitance | Frequency | Use Case |
|---|---|---|---|---|
| Frequency | 10 uH | 100 nF | 159.154943 kHz | Small filter or tuner example |
| Frequency | 47 uH | 220 nF | 49.494833 kHz | Mid-range resonance check |
| Frequency | 100 uH | 1 nF | 503.292121 kHz | Higher target frequency case |
| Frequency | 2.2 mH | 0.47 uF | 4.949483 kHz | Audio and hobby testing example |
The resonant frequency formula is:
f = 1 / (2 * pi * sqrt(L * C))
Where f is frequency in hertz, L is inductance in henry, and C is capacitance in farad.
For reverse calculations:
L = 1 / (((2 * pi * f)^2) * C)
C = 1 / (((2 * pi * f)^2) * L)
Additional outputs use these formulas:
Angular frequency: w = 2 * pi * f
Period: T = 1 / f
Reactance at resonance: X = 2 * pi * f * L
Estimated Q factor: Q = (1 / R) * sqrt(L / C)
Estimated bandwidth: BW = f / Q
An LC frequency calculator helps sellers, buyers, and technicians estimate resonance quickly. It uses inductance and capacitance to find the natural frequency of a circuit. This is useful when you manage coils, capacitors, filter kits, tuner parts, or repair bundles in an online catalog.
Technical accuracy improves trust. Shoppers compare frequency range, compatibility, and expected performance before they buy. A reliable calculator helps your store team validate product bundles, write better descriptions, and answer presale questions. It can also reduce mismatch returns because important values are checked before listings go live.
This page supports three common workflows. You can calculate resonant frequency from inductance and capacitance. You can solve for inductance from a target frequency and capacitance. You can also solve for capacitance from a target frequency and inductance. Extra outputs include angular frequency, period, reactance, optional Q factor, and estimated bandwidth.
These outputs help during sourcing and product planning. A store may sell hobby electronics, radio parts, audio filter packs, educational kits, or test accessories. Buyers often need quick checks between part values and target frequency ranges. The unit selectors speed up comparisons and remove manual conversion work.
The result appears above the form, so it is easy to review and export. CSV export works well for spreadsheets, vendor notes, and internal documentation. PDF export is helpful when you want to share a clean summary with teammates, suppliers, or customers. This makes the calculator practical for everyday store operations.
Small changes in inductance or capacitance can shift frequency fast. That is why careful calculation matters during catalog writing, bundle building, and supplier checks. When a vendor lists unusual values, your team can test whether the claimed tuning range is realistic. That supports cleaner listings, smarter inventory choices, and faster product review.
LC frequency is the natural resonant frequency created by an inductor and capacitor together. At this point, the circuit stores and exchanges energy between magnetic and electric fields efficiently.
Yes. Choose the inductance mode, enter target frequency and capacitance, and submit the form. The page will calculate the needed inductance and show related outputs.
Yes. Choose the capacitance mode, enter target frequency and inductance, and the tool will calculate the required capacitance for resonance.
Inductors and capacitors are often listed in different units. Unit selectors prevent conversion mistakes and make comparisons faster when you work with supplier data or product specs.
Q factor estimates how selective the resonant circuit is. A higher Q usually means narrower bandwidth and sharper resonance, assuming your resistance value is realistic.
Real circuits include parasitic resistance, tolerance, temperature effects, and layout losses. This calculator gives a strong theoretical estimate, but physical parts may shift the final result.
Yes. It helps validate bundles, compare supplier parts, support technical descriptions, and answer buyer questions about resonant behavior before a product is published or purchased.
They export the result summary shown above the form. This makes it easier to save calculations, share them with coworkers, or attach them to sourcing and review notes.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.