AudioCalcs
Frequency Calculator — Frequency, Wavelength & Period
Convert between frequency, wavelength and period of a sound wave at any temperature.
How We Calculate This
Wavelength: λ = v / f
Period: T = 1 / f
Speed of sound: v = 331.3 + 0.606 × T(°C)
These three relationships allow conversion between any combination of frequency, wavelength and period.
Frequently Asked Questions
Frequency (f), wavelength (λ) and period (T) are related by: λ = v/f and T = 1/f, where v is the speed of sound. Higher frequency means shorter wavelength and shorter period.
Human hearing ranges from approximately 20 Hz to 20,000 Hz (20 kHz). Bass frequencies are below 250 Hz, midrange is 250 Hz to 4 kHz, and treble is above 4 kHz. Most people lose high-frequency sensitivity with age.
No — frequency is determined by the source. However, the speed of sound changes with temperature, which means the wavelength changes. At higher temperatures, the same frequency has a slightly longer wavelength.
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Last updated: February 2026
All calculations are estimates based on standard formulas. Always verify results for critical applications.