When to use this calculator
At this ideal frequency, inductive and capacitive reactance magnitudes match.
Explore the ac power & reactance calculators for other questions in this topic. For a related calculation, use the Motor Shaft Torque Calculator: Find shaft torque from mechanical power and rotational speed.
PUTTING IT INTO PRACTICE
LC Resonant Frequency: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Inductance (mH) | 10 |
| Capacitance (μF) | 1 |
| Result | 1,591.549431 Hz |
- Check the input labels and enter the example values above.
- Apply the relationship: Frequency = 1/(2π√(L × C)).
- The result is 1,591.549431 Hz, rounded for display.
How to interpret your result
Uses ideal components and excludes parasitic capacitance, resistance and loading.
Use RMS values in the AC power relationships. Apparent power is measured in VA and real power in watts. Pure-sine conversions and balanced three-phase equations only apply under their stated assumptions.
Frequently asked questions
Why can volt-amps differ from watts?
Apparent power is the RMS voltage-current product, while real power also reflects power factor. They are numerically equal only at a power factor of one.
When is the lc resonant frequency calculator useful?
At this ideal frequency, inductive and capacitive reactance magnitudes match.
How do I use the lc resonant frequency calculator?
Enter inductance (mh), capacitance (μf). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Frequency = 1/(2π√(L × C)).
What should I check before using the result?
Uses ideal components and excludes parasitic capacitance, resistance and loading.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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