Solfeggio frequency
528 Hz — Solfeggio Frequency (“MI”)
528 Hz is the most popular of the so-called Solfeggio frequencies — a set of tones widely used in meditation, ambient music and sound-bath recordings.
Tap a note to play its exact pitch — C1 to B8
Press Space to play
About the 528 Hz tone
The Solfeggio frequencies are a group of specific pitches that circulate widely in meditation and relaxation communities, with 528 Hz — traditionally labelled “MI” — the most commonly requested. This page simply generates a clean, steady 528 Hz sine tone so you can play or layer it yourself.
Musically, 528 Hz sits close to the note C5. You can see exactly how close on the generator, which shows the nearest note and how many cents the tone is from it.
Plenty of claims are made about the Solfeggio series online; we don't make any here. Treat it as a frequency people enjoy listening to, and use whatever setting sounds good to you.
Technical details
- Frequency
- 528 Hz
- Nearest note
- C5 (+16¢)
- Category
- Solfeggio frequency
- Period
- 1.89 ms
- Wavelength (air)
- 65.0 cm
- Octave up / down
- 1056 Hz / 264 Hz
Common uses
- A steady tone for meditation, relaxation or ambient listening
- Layer under music or soundscapes at a low volume
- Explore the Solfeggio series alongside 396, 639 and the others
Frequently asked questions
What note is 528 Hz?
528 Hz is closest to C5 — the C an octave above middle C — sitting just below it. The generator above shows the nearest note and the exact number of cents it differs, so you can see how it lines up on a keyboard or tuner.
Is 528 Hz the most popular Solfeggio frequency?
Yes. 528 Hz, labelled “MI”, is the best known of the Solfeggio tones and the one people request most. The rest of the series runs 396, 417, 639, 741 and 852 Hz, each linked under Nearby frequencies.
How do I play 528 Hz online for free?
Press play and the tone loops seamlessly for as long as you like — no sign-up, no download, nothing installed. You can change the volume or switch waveforms at any time, and the sound is generated in your browser.