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Frequency Converter

Hz, kHz, MHz, GHz and RPM live conversion.

Best for: Use it for radio and CPU clocks (kHz/MHz/GHz), audio (Hz), or rotating machinery (rpm).

Complete guide

Input

From
To
How it's calculated & sources
The Frequency Converter uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

How it works

Hertz = cycles per second. 1 RPM = 1/60 Hz.

Example

3 GHz = 3,000 MHz = 3,000,000 kHz.

Frequently asked questions

Is conversion real-time?+

Yes — values update instantly as you type in either field, with full bidirectional input.

Where does the frequency reference come from?+

All factors are SI-anchored using internationally accepted conversions.

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Frequency?
A frequency converter changes a frequency between hertz, kilohertz, megahertz, gigahertz and revolutions per minute.
Why does Frequency matter?
The same frequency (cycles per second) in your target unit.
How is Frequency calculated?
Each value is converted through hertz (cycles per second) and then to your chosen unit. Formula: 1 kHz = 1,000 Hz; 1 MHz = 1,000,000 Hz; 1 GHz = 1,000,000,000 Hz; 1 rpm = 1/60 Hz.
What are common frequency mistakes?
Confusing Hz (cycles/second) with rpm (revolutions/minute).
When should you use the Frequency Converter?
Use it for radio and CPU clocks (kHz/MHz/GHz), audio (Hz), or rotating machinery (rpm).

What is the Frequency Converter?

A frequency converter changes a frequency between hertz, kilohertz, megahertz, gigahertz and revolutions per minute.

How the Frequency Converter works

Each value is converted through hertz (cycles per second) and then to your chosen unit.

1 kHz = 1,000 Hz; 1 MHz = 1,000,000 Hz; 1 GHz = 1,000,000,000 Hz; 1 rpm = 1/60 Hz

Frequency conversions — hertz, kilohertz, megahertz, gigahertz

11.00e-31.00e-61.00e-9
100011.00e-31.00e-6
50000500.055.00e-5
1000000100011.00e-3
1000000001000001000.1
1000000000100000010001

Common mistakes to avoid

  • Confusing Hz (cycles/second) with rpm (revolutions/minute).
  • Mixing up the metric prefixes by a factor of 1,000.
  • Reading angular frequency (rad/s) as ordinary frequency.

Keywords: frequency, hertz, rpm.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Frequency Converter free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Frequency Converter?+

Frequency Converter uses the standard frequency formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Frequency Converter runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Frequency Converter on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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# Frequency Converter — the free tool I keep coming back to

Hz, kHz, MHz, GHz and RPM live conversion.

Try it: https://freetoolsgalaxy.com/tools/frequency-converter
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The fastest way is to use a free in-browser frequency converter: https://freetoolsgalaxy.com/tools/frequency-converter. Hz, kHz, MHz, GHz and RPM live conversion.

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