Frequency Converter
Convert between hertz, kilohertz, megahertz and gigahertz, and get the equivalent period and wavelength.
Formula and sources updated · Data sources · 1View algorithm, constants and default inputs (JSON)
1 MHz = 0.001 GHz
About this calculator
Convert frequency units and see the reciprocal period and a wavelength estimate in vacuum. The wavelength uses the exact speed of light in vacuum; real radio waves travel more slowly through air, cables or other materials.
Worked example
calculated with the default values below
Value 1 · From Gigahertz (GHz) · To Megahertz (MHz) · Decimal places 4 Result 1,000 · Hertz 1,000,000,000.0000 Hz · Period 0.000001000000000 ms · Wavelength in vacuum 0.299792458000 m
Method and assumptions
Formula basis and scope
Convert frequency via hertz; rpm is divided by 60 for cycles per second.
Only the displayed unit definitions are converted; rounding and measurement uncertainty are separate.
Data sources
Disclaimer
These calculators give general conversion results. Rounding and the precision of the value you enter both affect the output, so treat displayed decimals as indicative rather than exact.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
f = v x F[s] / F[t]; T_ms = 1000 / f; λ_m = 299792458 / f
- v
- input frequency value
- s
- source unit
- t
- target unit
- F
- unit factor: Hz 1, kHz 10^3, MHz 10^6, GHz 10^9
- f
- frequency in Hz
- T_ms
- period in milliseconds
- λ_m
- wavelength in metres (vacuum)
T = 1,000 ÷ f gives milliseconds; λ = 299,792,458 ÷ f gives metres in vacuum. The speed of light is exact in vacuum; media such as air and cable reduce propagation speed. At f = 0, period and wavelength have no finite value.
Frequently asked questions
How does the tool convert frequency to period?
It converts the entered unit to hertz and reports period in milliseconds as 1,000 ÷ hertz. One gigahertz has a one-nanosecond period. Wavelength uses the exact speed of light in vacuum (299,792,458 m/s); propagation through air, cable or another material is slower. At zero hertz there is no finite period or wavelength.