Wavelength Converter
Convert between wavelength units: nanometers, micrometers, millimeters, centimeters, and meters.
Used in optics, physics, and radio engineering.
Type in any field — the others update instantly.
All conversions use meters (m) as the base unit.
Key conversion factors:
- 1 nanometer (nm) = 0.000000001 m (10⁻⁹ m)
- 1 micrometer (µm) = 0.000001 m (10⁻⁶ m)
- 1 millimeter (mm) = 0.001 m
- 1 centimeter (cm) = 0.01 m
Electromagnetic spectrum reference:
| Type of Radiation | Typical Wavelength |
|---|---|
| Visible light (violet) | ~380 nm |
| Visible light (red) | ~700 nm |
| Near infrared | 0.7 – 2.5 µm |
| Mid infrared | 2.5 – 25 µm |
| Microwave (Wi-Fi 2.4 GHz) | ~125 mm |
| FM radio (100 MHz) | ~3 m |
Wavelength and frequency are inversely related:
λ = c / f where c = speed of light (≈ 3 × 10⁸ m/s) and f = frequency in Hz.