Frequency to Wavelength Converter

Convert frequency to wavelength and vice versa using the speed of light

Calculate

Choose what to calculate

Input Values

Enter known value

1 MHz = 1,000,000 Hz

Refractive index: 1

Result

Calculated wavelength

2.997925 m
Wavelength
In meters: 2.997925e+0 m
In nanometers: 2.998e+9 nm

Wave Equation

c = λ × f
Speed of Light = Wavelength × Frequency
c = Speed of light (2.998e+8 m/s in vacuum / space)
λ (lambda) = Wavelength (meters)
f = Frequency (Hertz)
Calculating: λ = c / f = 3.00e+8 / 100000000 = 2.997925 m

Common Examples

FM Radio (100 MHz): λ ≈ 3 m
WiFi 2.4 GHz: λ ≈ 12.5 cm
Visible Light (green): λ ≈ 550 nm
X-Rays: λ ≈ 0.01-10 nm

Electromagnetic Spectrum

Radio Waves
3.000 kHz - 3.000 GHz
Microwaves
3.000 GHz - 300.000 GHz
Infrared
300.000 GHz - 430000.000 GHz
Visible Light
430000.000 GHz - 750000.000 GHz
Ultraviolet
750000.000 GHz - 30000000.000 GHz
X-Rays
30000000.000 GHz - 30000000000.000 GHz
Gamma Rays
30000000000.000 GHz - 3000000000000000.000 GHz

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About Frequency to Wavelength Converter

Convert Between Frequency and Wavelength

This converter uses the fundamental wave equation c = λf to convert between frequency and wavelength of electromagnetic waves. The speed of light varies in different media based on the refractive index.

Features

  • Convert frequency to wavelength
  • Convert wavelength to frequency
  • Support for different media (vacuum, air, water, glass)
  • Automatic refractive index adjustment
  • Electromagnetic spectrum reference
  • Multiple unit formats
  • High precision calculations

Understanding the Relationship

Frequency and wavelength are inversely proportional. Higher frequency means shorter wavelength. The product of frequency and wavelength always equals the speed of light in that medium. This relationship is fundamental to understanding electromagnetic radiation.

Applications

  • Radio and telecommunications
  • Optical fiber communications
  • Spectroscopy and chemistry
  • Astronomy and astrophysics
  • Medical imaging (X-rays, MRI)
  • Antenna design
  • Laser technology

Important Notes

  • Speed of light in vacuum: 299,792,458 m/s (exact)
  • Light slows down in denser media (higher refractive index)
  • Frequency remains constant when light enters a new medium
  • Wavelength changes when light enters a new medium
  • Visible light: 380-750 nm (430-770 THz)