Frequency Converter: Hz, kHz, MHz, GHz, rpm

Enter a frequency and pick the two units to convert between.

Updated October 27, 2026

Report a problem

Embed this calculator

Paste this code into your page. The calculator runs inside the frame and links back to the full version.

Width (px)Height (px)Accent colour (like #ff6600)Resize the frame to fit the calculator

Code to copy

<iframe src="/embed/en/unit-converters/frequency-converter/" width="480" height="640" title="Frequency Converter: Hz, kHz, MHz, GHz, rpm" loading="lazy" style="border:0;max-width:100%"></iframe>
<script>window.addEventListener('message',function(event){if(event.origin!==''||!event.data||event.data.type!=='calc-embed-height')return;var f=document.getElementsByTagName('iframe');for(var i=0;i<f.length;i++){if(f[i].contentWindow===event.source){f[i].style.height=event.data.height+'px';}}});</script>

Keep the credit link in place. Do not resell the calculator.

Formula

result = value × (factor of the from-unit) ÷ (factor of the to-unit), where every factor is the unit expressed in hertz: 1 kHz = 1,000 Hz, 1 MHz = 1,000,000 Hz, 1 GHz = 10⁹ Hz, 1 rpm = 1/60 Hz, 1 rad/s = 1/(2π) Hz.

Worked example

Convert 100 MHz to GHz: 100 × 1,000,000 Hz ÷ 1,000,000,000 Hz = 0.1 GHz. Convert 60 rpm to Hz: 60 × (1/60) = 1 Hz.

Frequently asked questions

How many Hz are in a MHz?

One megahertz is 1,000,000 hertz. So 100 MHz is 100,000,000 Hz, or 0.1 GHz.

How do I convert rpm to Hz?

Divide the revolutions per minute by 60. A motor turning at 1,800 rpm runs at 1,800 ÷ 60 = 30 Hz.

How many radians per second is 1 Hz?

One hertz is one cycle per second, and one cycle is 2π radians, so 1 Hz = 6.283185 rad/s.

How do I convert GHz to MHz?

Multiply by 1,000. A 2.4 GHz Wi-Fi band is 2.4 × 1,000 = 2,400 MHz.

Is frequency the same as period?

They are inverses. A 50 Hz signal repeats every 1 ÷ 50 = 0.02 seconds.

How we calculate

Frequency Converter: Hz, kHz, MHz, GHz, rpm

Formula

Worked example

Frequently asked questions

Related calculators