Free Frequency to Note Converter

Easily translate raw Audio Frequencies (Hz) into Musical Notes, or vice versa.
Highly useful for surgically EQing a specific drum hit or tuning sub-basslines.

Online Pitch to Hz Calculator

Discover the exact mathematical relationship between raw audio frequencies and standard musical pitches effortlessly within your browser.

What is the Hz & Note Converter?

The Frequency to Note Converter is a free online audio calculation tool that bridges the gap between raw physics and music theory. Every musical note vibrates at a specific frequency measured in Hertz (Hz). This bidirectional calculator allows you to input a frequency to find its exact musical pitch (including how many 'cents' it is out of tune), or select a note to discover its mathematically perfect Hz value.

How to convert Hz to Notes?

To convert a frequency to a note, simply type the Hz value (e.g., 440) into the left panel, and the tool will instantly display the corresponding musical note (A4) alongside its tuning accuracy. To convert a note to Hz, use the dropdown menus on the right panel to select the root note and octave. The tool will calculate the exact Hertz value, which you can immediately apply in your digital audio workstation (DAW).

Who uses this tool?

This calculator is heavily utilized by sound designers tuning raw synthesizers, music producers matching the pitch of royalty-free 808 sub-bass samples to their track's key, and mixing engineers using equalizers (EQ) to surgically identify and remove harsh resonant frequencies from original vocal recordings.

How to Use the Converter in 2 Steps

Step 1

Input Value

Type a frequency (in Hz) into the left box, or select a musical note and octave from the dropdowns on the right.

Step 2

Read the Result

The conversion happens instantly. You will see the exact pitch representation or the mathematically exact Hz value below.

Converter Tool Area

Pro Tip: Finding an annoying ringing sound in your vocals? Sweep your EQ to find the frequency (Hz), convert it to a note here, and see if it clashes with the song's key!

Hz to Note

A4

Perfect Tune (0 cents)

Note to Hz

Select Note & Octave

440.00

Exact Frequency (Hz)

Frequently Asked Questions

Is the Frequency & Note Converter free?
Yes. The converter is completely free to use, requires no signup, and has no limits. You can make as many calculations as you need for your music production.

Why is converting Hz to Musical Notes useful?
Every musical note vibrates at a specific frequency (measured in Hertz). If an instrument or drum sample has an annoying ringing frequency, you can use an EQ to find the Hz value, then use this tool to figure out which exact musical note is causing the problem.

Why convert Musical Notes to Hz?
Sound designers and producers use this to "tune" unpitched sounds. For example, if your song is in the key of C, you can use this tool to find out that a low C1 note is exactly 32.70 Hz. You can then use an EQ to boost 32.70 Hz on your kick drum so it perfectly matches the bassline.

What does the "Cents" value mean?
A "cent" is a unit of measure used for musical intervals. There are 100 cents between every musical note (e.g., between C and C#). If you input a random frequency like 445 Hz, the tool will tell you it's an A4 note, but it is +20 cents "sharp" (meaning it is slightly out of tune).

Do I need to upload my audio file?
No. This is a mathematical calculation tool. It does not scan or listen to your audio files. It simply provides the mathematical translation between pitch and frequency.

Do I need to install any software?
No. The calculator runs completely online directly within your web browser, functioning perfectly on both desktop computers and mobile devices.