What is the wavelength formula?

λ = c/f, where λ is wavelength (m), c is speed of light (3×10⁸ m/s), and f is frequency (Hz). So f = c/λ to get frequency from wavelength.

Wavelength in meters (m), frequency in hertz (Hz). For other units (e.g. nm), convert after: 1 m = 10⁹ nm.

Online Wavelength Calculator

Convert between frequency f (Hz) and wavelength λ: λ = c/f where c = 3×10⁸ m/s (speed of light).

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Frequency → Wavelength (λ = c/f)Wavelength → Frequency (f = c/λ)

Frequency f (Hz)

What is the wavelength formula?: λ = c/f, where λ is wavelength (m), c is speed of light (3×10⁸ m/s), and f is frequency (Hz). So f = c/λ to get frequency from wavelength.
What units?: Wavelength in meters (m), frequency in hertz (Hz). For other units (e.g. nm), convert after: 1 m = 10⁹ nm.

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