Select a category and enter your values below
To convert from kilohertz (kHz) to millihertz (mHz), use the following formula:
millihertz (mHz)
= 1000 × 1000× kilohertz (kHz)
= 106× kilohertz (kHz)
Let's convert 5 kilohertz (kHz) to millihertz (mHz).
Using the formula:
5 × 106 = 5000000
Therefore, 5 kilohertz (kHz) is equal to 5000000 millihertz (mHz).
How many kilohertz are in one millihertz? One millihertz (mHz) contains 10-6 kilohertz (kHz) — the inverse of the factor above. Multiplying by 106 takes you from kilohertz to millihertz; multiplying by 10-6 brings you back.
Put in words: one kilohertz equals 106 millihertz, so the kilohertz is the larger unit of this pair. Converting between them never changes the amount of frequency being measured — only the size of the unit you count it in.
A kilohertz (kHz) is a unit of frequency in the International System of Units (SI), equal to one thousand hertz (1000 Hz). The plural form is kilohertz.
It's a term you'll encounter in everything from sound and radio to the history of computing.
Your ability to perceive sound, from the deepest bass to the highest treble, is measured in hertz and kilohertz.
The range of human hearing typically falls between 20 Hz and 20 kilohertz (20,000 Hz).
The frequencies most sensitive to the human ear, particularly for understanding speech, are concentrated in the range of 1 to 4 kHz. This is why audio engineers and audiologists pay close attention to this specific spectrum when mixing music or conducting hearing tests.
Kilohertz is the fundamental unit used for AM (Amplitude Modulation) radio broadcasting.
AM radio stations operate in a frequency range from 535 to 1705 kilohertz in the Americas, often referred to as the medium wave band.
Each station is assigned a specific frequency, like 820 kHz or 1010 kHz, which your radio receiver tunes into to capture the broadcast signal. This contrasts with FM radio, which broadcasts in the much higher megahertz (MHz) range.
While today's computers boast processor speeds in gigahertz (GHz), the pioneers of computing operated at much slower speeds measured in kilohertz.
For instance, the Intel 4004, the world's first commercial microprocessor, was released in 1971 with a clock speed of just 740 kHz.
Beyond computing, kilohertz frequencies are also crucial in other technologies. A key example is medical ultrasound, where transducers emit sound waves in the high kHz to low MHz range to create diagnostic images of the body's organs and tissues.
Ever wondered how scientists measure incredibly slow, barely-there movements, like the subtle shifting of continents or the rhythm of a distant star?
They often use a special unit of frequency called the millihertz (mHz).
A millihertz is a unit of frequency equal to one-thousandth of a hertz (0.001 Hz). It's designed to measure things that happen very, very slowly.
While a standard hertz (Hz) measures cycles per second (think sound waves or computer speeds), a millihertz measures events that occur very slowly, taking a very long time to complete a single cycle.
To put it in perspective, something oscillating at one mHz takes 1,000 seconds—or nearly 17 minutes—to complete just one cycle!
This makes the unit perfect for tracking extremely slow phenomena.
Key applications include:
Frequency and time are two sides of the same coin.
In physics, the time it takes for one complete cycle is called the period (T), while frequency (f) refers to the number of cycles that occur per second. They are inversely related: as one increases, the other decreases.
The relationship is expressed as T = 1/f.
To find the period in seconds from a frequency in mHz, you first convert mHz to Hz (1 mHz = 0.001 Hz) and then find its reciprocal.
Formula:
Example:
The mHz range is crucial for one of the most exciting fields in modern astronomy: the search for gravitational waves.
Space-based observatories, such as the Laser Interferometer Space Antenna (LISA), are specifically designed to detect low-frequency gravitational waves in the millihertz band.
These ripples in spacetime are believed to be caused by some of the most massive and dramatic events in the universe, such as:
Detecting signals in the millihertz band offers scientists a unique opportunity to explore cosmic events, allowing them to observe the universe in a completely new way.
Here are some quick reference conversions from kilohertz (kHz) to millihertz (mHz):
| kilohertz | millihertz |
|---|---|
| 0.000001 kHz | 1 mHz |
| 0.001 kHz | 1000 mHz |
| 0.1 kHz | 105 mHz |
| 1 kHz | 106 mHz |
| 2 kHz | 2000000 mHz |
| 3 kHz | 3000000 mHz |
| 4 kHz | 4000000 mHz |
| 5 kHz | 5000000 mHz |
| 6 kHz | 6000000 mHz |
| 7 kHz | 7000000 mHz |
| 8 kHz | 8000000 mHz |
| 9 kHz | 9000000 mHz |
| 10 kHz | 107 mHz |
| 20 kHz | 20000000 mHz |
| 30 kHz | 30000000 mHz |
| 40 kHz | 40000000 mHz |
| 50 kHz | 50000000 mHz |
| 100 kHz | 108 mHz |
| 1000 kHz | 109 mHz |
| 10000 kHz | 1010 mHz |
For all Frequency converters, choose units using the From/To dropdowns above.