Convert between frequency and wavelength for sound in different media. Air speed is temperature-aware; other media use standard reference values. All calculations run locally in your browser.
The calculator uses λ = v / f, where λ is wavelength (m), v is speed of sound in the chosen medium (m/s), and f is frequency (Hz). Period is T = 1 / f.
For air, the speed of sound is estimated with v ≈ 331.3 + 0.606·T (m/s) where T is in °C. This first-order model is accurate enough for most audio and educational uses.
Reference longitudinal speeds (typical values): water ~1482 m/s (fresh, ~20 °C), copper ~4760 m/s, steel ~5960 m/s, aluminium ~6320 m/s. Use “Custom” to specify your own value.
Frequency accepts Hz or kHz; wavelength accepts m, cm, or mm. Results are rounded sensibly to avoid false precision. All computations are done in SI internally.
This tool is for educational and general engineering guidance only. For critical calculations, verify values using professional references and material/condition-specific data.