Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Megahertz to Kilohertz
Convert MHz to kHz instantly, then review the formula, assumptions, and rounding guidance.
FrequencyInstant result
Decimals
Formula result = input × 1000000 ÷ 1000. 1 MHz = 1,000 kHz
Common examples
One value, several units
Hertz1,000,000 Hz
Kilohertz1,000 kHz
Gigahertz0.001 GHz
Revolutions per minute60,000,000 rpm
Conversion table
| MHz | kHz |
|---|---|
| 1 MHz | 1,000 kHz |
| 2 MHz | 2,000 kHz |
| 5 MHz | 5,000 kHz |
| 10 MHz | 10,000 kHz |
| 25 MHz | 25,000 kHz |
| 50 MHz | 50,000 kHz |
| 100 MHz | 100,000 kHz |
Conversion chart
1 MHz1,000 kHz
5 MHz5,000 kHz
10 MHz10,000 kHz
25 MHz25,000 kHz
50 MHz50,000 kHz
Worked example
1 megahertz equals 1,000,000 hertz.
Unit definition
Megahertz (MHz) One megahertz equals 1,000,000 hertz.
Unit history
Megahertz is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert MHz to hertz.
3. Convert the base value to kHz and apply your display precision.
Understand the result before using it
Megahertz to Kilohertz converts a value measured in Megahertz (MHz) into the equivalent value in Kilohertz (kHz). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1000000 ÷ 1000
Assumptions
- Megahertz and Kilohertz represent the same frequency quantity.
- The input is expressed in MHz; the output is expressed in kHz.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 MHz = 1,000 kHz. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a MHz measurement in a document that expects kHz.
- Compare a megahertz value with a value reported in kilohertz.
- Check the MHz-to-kHz arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse MHz with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Megahertz to Kilohertz?
result = input × 1000000 ÷ 1000 Using the displayed relationship, 1 MHz equals 1,000 kHz.
How many Kilohertz are in one Megahertz?
One Megahertz is 1,000 Kilohertz. The displayed digits may be rounded.
Can I reverse the MHz to kHz conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts kHz back to MHz.
Is the Megahertz to Kilohertz result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.