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Kilohertz to megahertz

Multiply kilohertz by 0.001 to get megahertz.

1 kHz = 0.001 MHzBIPM SI
kHz
2MHz

2,000 kHz = 2 MHz

How to convert kilohertz to megahertz

The megahertz is one million hertz (10⁶ Hz). The kilohertz is one thousand hertz (10³ Hz).

Worked example — 2,000 kHz: 2,000 × 0.001 = 2 MHz.

Kilohertz to megahertz table

Common conversions.
KilohertzMegahertz
100 kHz0.1 MHz
500 kHz0.5 MHz
1,000 kHz1 MHz
1,500 kHz1.5 MHz
2,000 kHz2 MHz
5,000 kHz5 MHz
10,000 kHz10 MHz
50,000 kHz50 MHz
100,000 kHz100 MHz

Reverse and related

About kilohertz and megahertz

Kilohertz (kHz)

1 kHz = 0.001 MHz

Definition. One thousand hertz (10³ Hz)

History and origin

The kilohertz is one thousand hertz, a convenient multiple for sound and radio. It became familiar through AM radio tuning and audio sampling.

Current use

Kilohertz are used for audio sample rates and AM radio frequencies.

Source: BIPM SI Brochure (2019); ISO 80000-3

Megahertz (MHz)

1 MHz = 1,000 kHz

Definition. One million hertz (10⁶ Hz)

History and origin

The megahertz is one million hertz, the scale of radio broadcasting and early computer processors. It marked the clock speed of personal computers into the 1990s.

Current use

Megahertz are used for radio frequencies and were long the unit for processor clock speeds.

Source: BIPM SI Brochure (2019); ISO 80000-3

Where people use this

Kilohertz: audio sample rates, radio. Megahertz: radio, CPU clocks (older). 1000 kHz is 1 MHz.

How we know this is right
The factor is fixed by the standards that define the units, not chosen — so it is exact, not a measurement:
1 MHz = 1,000 kHz, so 1 kHz = 1 ÷ 1,000 = 0.001 MHz.

Every value is carried to full double precision; the display is rounded.

Both units are defined in BIPM SI Brochure (2019); ISO 80000-3.

Questions people ask

How many MHz is 1000 kHz?

1000 kHz is exactly 1 MHz.

How many kHz in a MHz?

One megahertz is 1000 kilohertz.

How many MHz is 5000 kHz?

5000 kHz is 5 MHz.

All kilohertz conversions