I'm tuning a software-defined radio and my frequency list is in MHz, but the application expects kHz. How do I convert 101.5 MHz?

101.5 MHz × 1,000 = 101,500 kHz. Multiply any MHz value by 1,000 to get kHz. If you're working with Wi-Fi channels, see [MHz to GHz](/frequency/mhz-to-ghz/) to understand the full picture.

My radio kit datasheet shows the Citizens Band at 27 MHz. How many kilohertz is that?

27 MHz × 1,000 = 27,000 kHz. CB radio spans 26.965–27.405 MHz (26,965–27,405 kHz). Most modern CB equipment shows MHz, but vintage ham radio gear may still label channels in kHz.

Why do some radios list frequencies in MHz while others use kHz for the same signals?

Both are correct — just different scales. MHz keeps numbers smaller and more readable for high frequencies (e.g., 100 MHz instead of 100,000 kHz). Older equipment and regulatory databases often use kHz for precision. See [Hz to kHz](/frequency/hz-to-khz/) for how these scales relate to base Hz.

I measured a signal at 1,500,000 kHz on an older frequency counter. What is that in MHz?

Divide by 1,000: 1,500,000 kHz ÷ 1,000 = 1,500 MHz = 1.5 GHz. That's in the L-band used for satellite communications and GPS receivers.

MHz to kHz Converter

Enter a value to instantly convert between frequency units.

From

Precision4 dp

1 Megahertz = 1000 Kilohertz

Key Formulas

Hertz → Kilohertz

kHz = Hz × 0.001

Kilohertz → Hertz

Hz = kHz × 1000

Megahertz → Gigahertz

GHz = MHz × 0.001

Gigahertz → Megahertz

MHz = GHz × 1000

Formula

kHz = MHz × 1,000

FM radio stations broadcast in the 87.5–108 MHz range, which engineers and equipment often express as 87,500–108,000 kHz when integrating with older systems or performing signal calculations. Software-defined radios, spectrum analysers, and FCC frequency allocation tables sometimes require or display kHz precision even for high-frequency signals. Converting MHz to kHz bridges these specifications.

Source: NIST SP 811, Table B.8

Last reviewed: 2026-06-11 · see our methodology

Frequently Asked Questions

Real-World Examples

An FM radio station at 100 MHz = 100,000 kHz. Software-defined radio (SDR) projects often work in kHz when tuning receiver circuits and plotting spectrum.

100 MHz = 100000 kHz

The Wi-Fi 2.4 GHz band spans 2,400–2,500 MHz = 2,400,000–2,500,000 kHz. Network engineers use kHz for fine-grained channel allocation and interference analysis.

2400 MHz = 2400000 kHz

WNYC (88.1 FM) broadcasts at 88.1 MHz = 88,100 kHz. FCC regulations require precise kHz accuracy for frequency allocations.

88.1 MHz = 88100 kHz

The 433 MHz ISM band for remote controls and IoT devices is 433,000 kHz. Hobbyists using older frequency counters or spectrum analysers often see kHz precision on the display.

433 MHz = 433000 kHz

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MHz to kHz Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

Related Converters