Wave Speed Calculator
Calculate wave speed using wavelength and frequency (v = λ × f). Works for sound waves, light, and water waves.
Enter wavelength and frequency to calculate wave speed.
Wave Speed Formula
v = λ × f
Wave speed (v) equals wavelength (λ) multiplied by frequency (f). This applies to all periodic waves.
Example: A wave with λ = 2 m and f = 170 Hz.
v = 2 × 170 = 340 m/s (approximately the speed of sound in air)
v = 2 × 170 = 340 m/s (approximately the speed of sound in air)
Speed of Waves in Different Media
| Medium | Speed of Sound |
|---|---|
| Air (20°C) | 343 m/s |
| Water | 1,480 m/s |
| Steel | 5,960 m/s |
| Vacuum (light) | 299,792,458 m/s |
FAQ
Does wave speed depend on frequency?
For most waves in a uniform medium, speed is constant regardless of frequency. Exceptions include dispersive media where speed depends on wavelength.
Why is the speed of sound different in different materials?
Sound speed depends on the medium's density and elasticity. Denser, stiffer materials generally carry sound faster.
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Last updated: 2026-08-08