Wavelength Calculator
Calculate the wavelength of sound at a given frequency, or determine the frequency for a given wavelength. This relationship is fundamental to understanding room modes, boundary effects, and acoustic treatment design.
Hz
Common Frequencies Reference
| Frequency | Wavelength | Notes |
|---|---|---|
| 20 Hz | 17.15 m (56.3 ft) | Lowest audible frequency |
| 40 Hz | 8.58 m (28.1 ft) | Low E string on bass guitar |
| 80 Hz | 4.29 m (14.1 ft) | Typical subwoofer crossover |
| 100 Hz | 3.43 m (11.3 ft) | Deep bass range |
| 200 Hz | 1.72 m (5.6 ft) | Upper bass / lower mids |
| 500 Hz | 68.6 cm (2.3 ft) | Midrange frequencies |
| 1000 Hz | 34.3 cm (1.1 ft) | Reference frequency |
| 5000 Hz | 6.9 cm (2.7 in) | Speech clarity range |
| 10000 Hz | 3.4 cm (1.3 in) | High frequency treble |
| 20000 Hz | 1.7 cm (0.7 in) | Upper hearing limit |
Formula
λ = c / f Where:
- λ (lambda) = wavelength (meters)
- c = speed of sound (m/s)
- f = frequency (Hz)
The speed of sound in air varies with temperature:
c = 331.3 + (0.606 × T) Where T is temperature in °C. At 20°C, c ≈ 343 m/s (1125 ft/s).