Convert wavelength in metres to megahertz instantly. Type in either field — results update live.
Selected m values converted to MHz using the exact factor from this tool.
| m | MHz |
|---|---|
| 0.01 | 29,979.2458 |
| 0.1 | 2,997.92458 |
| 1 | 299.792458 |
| 2 | 149.896229 |
| 3 | 99.9308193333 |
| 5 | 59.9584916 |
| 10 | 29.9792458 |
| 20 | 14.9896229 |
| 50 | 5.99584916 |
| 100 | 2.99792458 |
| 1,000 | 0.299792458 |
Exact conversion factors in both directions, plus a worked example.
1 m = 299.792458 MHz
1 MHz = 299.792458 m
To convert wavelength in metres to megahertz, multiply by 299.792458.
To convert megahertz to wavelength in metres, multiply by 299.792458.
Example: convert 10 m to MHz
10 × 299.792458 = 29.9792458 MHz
Short background on the units used in this conversion.
Wavelength in metres is a reciprocal unit: frequency in hertz equals the speed of light divided by wavelength. At 1 metre, frequency is 299,792,458 hertz.
Metre-scale wavelengths describe long-wave radio, geophysical signals, and introductory physics problems linking f and λ.
The megahertz (MHz) equals one million hertz — a common unit for FM radio, amateur bands, and processor clock references.
Megahertz appears in broadcast band listings, RF engineering, and the classic AM/FM radio frequency dial.
MHz = m × 299.792458m = MHz × 299.792458, using the same exact factors as this converter.