Frequency & Wavelength Calculator
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Frequency (f) and wavelength (λ) are related by wave speed: v = fλ. For electromagnetic waves v = c = 3×10⁸ m/s. For sound in air at 20°C, v ≈ 343 m/s.
- 1λ = v / f
- 2f = v / λ
- 3EM waves in vacuum: c = 3×10⁸ m/s
- 4Sound in air at 20°C: v ≈ 343 m/s
Middle C (262 Hz) sound wave=λ = 343/262 = 1.31 m
Green light (550nm)=f = 3×10⁸/550×10⁻⁹ = 5.45×10¹⁴ Hz
| Medium | Wave type | Speed |
|---|---|---|
| Vacuum/air | Electromagnetic | 3×10⁸ m/s |
| Air at 20°C | Sound | 343 m/s |
| Water | Sound | 1,482 m/s |
| Steel | Sound | 5,960 m/s |
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