How to Convert Megahertz to Hertz (MHz to Hz)
Frequency conversions apply to radio stations, Wi-Fi bands and processor speeds. This guide shows how to convert megahertz into hertz by hand, with examples and a quick-reference table.
The conversion
To convert megahertz to hertz, multiply the value by 1,000,000. To go the other way, divide by the same number (or multiply by 1.000000e-06). For a quick estimate, multiply by about 1,000,000.
Hertz = megahertz × 1,000,000
Worked examples
- 3 MHz = 3,000,000 Hz
- 12.5 MHz = 12,500,000 Hz
- 75 MHz = 75,000,000 Hz
Megahertz to Hertz table
| Megahertz | Hertz |
|---|---|
| 1 MHz | 1,000,000 Hz |
| 2 MHz | 2,000,000 Hz |
| 5 MHz | 5,000,000 Hz |
| 10 MHz | 10,000,000 Hz |
| 20 MHz | 20,000,000 Hz |
| 25 MHz | 25,000,000 Hz |
| 50 MHz | 50,000,000 Hz |
| 100 MHz | 100,000,000 Hz |
| 250 MHz | 250,000,000 Hz |
| 500 MHz | 500,000,000 Hz |
| 1,000 MHz | 1,000,000,000 Hz |
Common questions
Is MHz to Hz exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Hertz to Megahertz converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For any value, use the Megahertz to Hertz Converter or browse all frequency converters.
Run your own numbers: Megahertz to Hertz Converter