Frequency Converter
Convert frequency between hertz, metric frequency units and revolutions per minute
Converted frequency
How we calculated it
About the Frequency Converter
Frequency Converter changes rates of repetition between hertz, kilohertz, megahertz, gigahertz and other supported frequency units. It is useful for electronics, radio, audio and timing specifications.
Frequency in hertz means cycles per second. Converting the unit changes only the numerical scale, not the underlying signal or its wavelength.
How to Use the Frequency Converter
- Enter the signal or repetition frequency.
- Select the current prefix and unit, such as Hz, kHz, MHz or GHz.
- Choose the frequency unit needed for the output.
- Convert and keep period or wavelength as separate calculations rather than treating them as unit changes.
How the Calculation Works
The converter uses hertz as a common basis. 1 kHz = 1,000 Hz, 1 MHz = 1,000,000 Hz and 1 GHz = 1,000,000,000 Hz.
If period is needed instead of frequency, period T = 1/f, which is a different calculation from changing frequency units.
Worked example
Frequency Converter Worked Example
2.4 GHz to MHz
2.4 GHz = 2.4×1,000 = 2,400 MHz.
Result guide
Understanding Your Frequency Converter Result
The converted value represents the same repetition rate. A higher number caused by choosing a smaller unit does not mean the signal frequency physically increased. For clock, audio and radio specifications, scientific notation is useful when the prefix changes by several orders of magnitude. Writing 2.45×10^9 Hz beside 2.45 GHz can make it easier to catch prefix mistakes in later formulas.
Before you rely on the answer
Assumptions and Limitations
- Units follow standard SI prefix definitions.
- Frequency is a non-negative scalar rate.
- Period or wavelength conversion is not implied by a pure unit conversion.
Practical tip
Using This Result in Practice
When checking radio or processor specifications, write the unit beside every number. Confusing MHz and GHz creates a factor-of-1,000 error.
Related calculations
Useful Calculations to Continue With
If you want to convert frequency into wavelength using a propagation speed, use the Frequency and Wavelength Calculator.
If you need the duration unit for a period once it has been calculated, use the Time Unit Converter.
Common questions
Frequency Converter FAQ
How many hertz are in 1 MHz?
1,000,000 Hz.
How many MHz are in 1 GHz?
1,000 MHz.
Is frequency conversion the same as finding wavelength?
No. Wavelength also requires the wave’s propagation speed.