Convert between various units of frequency, including hertz, kilohertz, megahertz, gigahertz, and more.
Hz to kHz:
kHz to MHz:
MHz to GHz:
Hz to wavelength (m):
FM radio broadcasting operates at 88-108 MHz. A station at 98.5 MHz has 98,500,000 signal cycles per second.
5G cellular networks use frequencies ranging from 600 MHz to 71 GHz for different coverage and speed requirements.
Modern CPU clock speeds typically range from 2-5 GHz, with each cycle representing one opportunity for computation.
MRI machines operate at radio frequencies of 42.58 MHz per Tesla of magnetic field strength.
Bass frequencies in music typically range from 20-250 Hz, while high treble notes can reach up to 20 kHz.
Operate at 2.45 GHz (2,450,000,000 Hz), a frequency that efficiently excites water molecules to heat food.
Question 1: What is 5.8 GHz expressed in MHz?
Answer: 5,800 MHz
Conversion: GHz × 1,000 = MHz
Question 2: What is the wavelength of a 100 MHz radio signal?
Answer: 3 meters
Using λ = c ÷ f = 300,000,000 ÷ 100,000,000 = 3 meters
Question 3: If a sound has a frequency of 440 Hz, what frequency is one octave higher?
Answer: 880 Hz
One octave higher means doubling the frequency: 440 Hz × 2 = 880 Hz
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Frequency is the number of occurrences of a repeating event per unit of time. It is measured in hertz (Hz), which represents one cycle per second. Frequency is a fundamental property in many fields, from electronics to acoustics to quantum physics.
Frequency (f) and wavelength (λ) are inversely related through the speed of propagation (v), typically the speed of light for electromagnetic waves:
As frequency increases, wavelength decreases, and vice versa.
Frequency measurements are essential in many fields:
| Application/Phenomenon | Frequency Range | Notes |
|---|---|---|
| Human hearing range | 20 Hz - 20 kHz | Varies with age and individual |
| AM radio broadcasting | 540 kHz - 1.7 MHz | Long-distance transmission |
| FM radio broadcasting | 88 MHz - 108 MHz | Higher quality, shorter range |
| Wi-Fi networks | 2.4 GHz, 5 GHz | Common wireless networking |
| Microwave ovens | ~2.45 GHz | Water molecule excitation |
| 5G cellular networks | 600 MHz - 71 GHz | High-band, mid-band, low-band |
| Visible light | 430 THz - 770 THz | Red to violet colors |
The electromagnetic spectrum spans a wide range of frequencies:
