Frequency Converter
Convert frequencies between hertz, kilohertz, megahertz, and gigahertz.. Use this smart bidirectional calculator to convert between different frequency measurements instantly. See live results, calculation history, and exact formulas.
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Frequency Converter
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Formula
kHz = Hz × 0.001
To convert Hertz to Kilohertz, use the formula displayed above.
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Recent History
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How to Convert Frequency Units
To perform a conversion, look up the target unit's conversion factor relative to the base unit (hertz). Below are the exact mathematical formulas for the most common frequency unit pairs:
Hertz to Kilohertz
kHz = Hz × 0.001 Megahertz to Gigahertz
GHz = MHz × 0.001 RPM (Revolutions/min) to Hertz
Hz = rpm × 0.016666667 Hertz to Kilohertz
kHz = Hz × 0.001 Frequency Unit Conversion Charts
Here are the standard reference conversion charts displaying values from 1 to 20 for the most popular unit conversions:
Hz to kHz
| Hz | kHz |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 11 | 0.011 |
| 12 | 0.012 |
| 13 | 0.013 |
| 14 | 0.014 |
| 15 | 0.015 |
| 16 | 0.016 |
| 17 | 0.017 |
| 18 | 0.018 |
| 19 | 0.019 |
| 20 | 0.02 |
MHz to GHz
| MHz | GHz |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 11 | 0.011 |
| 12 | 0.012 |
| 13 | 0.013 |
| 14 | 0.014 |
| 15 | 0.015 |
| 16 | 0.016 |
| 17 | 0.017 |
| 18 | 0.018 |
| 19 | 0.019 |
| 20 | 0.02 |
rpm to Hz
| rpm | Hz |
|---|---|
| 1 | 0.016667 |
| 2 | 0.033333 |
| 3 | 0.05 |
| 4 | 0.066667 |
| 5 | 0.083333 |
| 6 | 0.1 |
| 7 | 0.116667 |
| 8 | 0.133333 |
| 9 | 0.15 |
| 10 | 0.166667 |
| 11 | 0.183333 |
| 12 | 0.2 |
| 13 | 0.216667 |
| 14 | 0.233333 |
| 15 | 0.25 |
| 16 | 0.266667 |
| 17 | 0.283333 |
| 18 | 0.3 |
| 19 | 0.316667 |
| 20 | 0.333333 |
Hz to kHz
| Hz | kHz |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 11 | 0.011 |
| 12 | 0.012 |
| 13 | 0.013 |
| 14 | 0.014 |
| 15 | 0.015 |
| 16 | 0.016 |
| 17 | 0.017 |
| 18 | 0.018 |
| 19 | 0.019 |
| 20 | 0.02 |
Every Frequency Unit, Explained
Frequency conversion covers 5 units. Below is a plain-English definition of each one and where you'll actually meet it in daily life.
Hertz (Hz)
The hertz measures cycles per second.
Used for: Audio frequencies, processor clock rates, and AC power mains (50/60 Hz).
Kilohertz (kHz)
A kilohertz is 1,000 hertz.
Used for: AM radio bands and ultrasonic applications.
Megahertz (MHz)
A megahertz is 1,000,000 hertz.
Used for: FM radio, computer bus speeds, and older processor clocks.
Gigahertz (GHz)
A gigahertz is 1,000,000,000 hertz.
Used for: Modern processor speeds, Wi-Fi bands (2.4/5/6 GHz), and radar.
RPM (Revolutions/min) (rpm)
RPM (revolutions per minute) measures rotational speed; one RPM is 1/60 hertz.
Used for: Car engines, hard drives, washing machines, and any rotating machinery.
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Frequency Converter FAQs
What is a Frequency converter?
A Frequency converter is a free online utility that transforms a measurement expressed in one unit of frequency into its equivalent in another, such as converting Hertz to Kilohertz.
How do you convert frequency units?
To convert frequency units, choose your from-unit and to-unit from the dropdown list in the tool above, then enter the value you wish to convert. The tool computes the result live in real time using exact SI conversion factor formulas.
What are the most popular frequency conversions?
The most frequently performed frequency conversions on our site are Hertz to Kilohertz, Megahertz to Gigahertz, RPM (Revolutions/min) to Hertz. Our tool pre-calculates full charts and formulas for all of them.
Which frequency units are supported?
We support all standard global SI (metric) and imperial units including Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), RPM (Revolutions/min) (rpm).
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