Frequency & Wavelength Calculator
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Frequency (Hz)
Wavelength (m)
Enter either frequency or wavelength — the other is calculated automatically.
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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.
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