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417 Hz
Free healing-frequency, solfeggio & Om sound generator
The "Re" of the solfeggio scale — a pure tone or a soft drone, ready to play.
Start at a low volume and turn up slowly. Pure tones can sound louder than music at the same setting, especially higher frequencies.
| Frequency | 417 Hz (417 vibrations per second) |
|---|---|
| Nearest musical note (A=440) | G#4 +7 cents |
| Wavelength in air | about 82 cm |
| Period of one cycle | 2.40 ms |
| Solfeggio syllable | Re |
| Which set | Original six (Puleo) |
| Popular claim | Promoted as "undoing situations and facilitating change"; often mapped to the sacral chakra (a claim, not a demonstrated effect) |
417 Hz is the second tone of the original six-note solfeggio set that Joseph Puleo described in the 1970s and Leonard Horowitz popularised in the 1990s. It carries the syllable "Re", from the second line of the hymn Ut queant laxis ("Resonare fibris"). As with the other tones, the Hertz value was not part of the medieval hymn; it was added in the modern era. Its digits reduce to 3 (4 + 1 + 7 = 12).
Many period-instrument ensembles that play Bach and Handel tune their A to 415 Hz, about a semitone below modern pitch, as an approximation of historical practice. 417 Hz sits just 7 cents above that — closer than most people can hear. So if you have ever listened to a Baroque orchestra, its A was almost exactly this tone. In modern A=440 tuning, 417 Hz is a G#4 (415.30 Hz) plus 7 cents.
That is a coincidence, not evidence of anything hidden; it just makes 417 Hz a pleasant, very "musical" tone that blends well with instruments.
417 Hz is sold as the frequency for "undoing situations", "clearing negative energy" and "facilitating change", and chakra playlists label it as sacral. None of this has been tested in controlled research, and there is no reason to expect a single tone to change circumstances or "energy".
Where it can help is as a ritual marker: some people use the same short tone session at the start of a new routine, a morning reset or a planning session. The value there comes from the habit and the pause, not the number.
Nobody has shown that a particular frequency heals the body, repairs DNA or treats a medical condition. The specific benefits attached to each solfeggio number are claims from the books and videos that popularised them, not findings from controlled research. What is well supported is more modest: calm, steady, predictable sound that you like can help you relax, mask distracting noise and give your attention somewhere to rest. Any of these tones can do that — and so can plenty of others.
Use it for: relaxation, meditation, a calm background while you read or rest, sound exploration, or simply because you like it. Don't use it as: a treatment for any medical or mental-health condition. For a deeper look at the whole set, see the solfeggio frequency list.
It is promoted as a frequency for "facilitating change" and clearing negativity, but those are claims rather than demonstrated effects. In practice it is a smooth, mid-range tone that many people find pleasant for relaxation or meditation.
Yes. Baroque ensembles commonly tune A to 415 Hz, and 417 Hz is only about 7 cents above that.
In standard A=440 tuning it is a G#4 (415.30 Hz), about 7 cents sharp.
Pure tone gives you exactly 417 Hz with nothing else. Soft drone adds the octave below (208.5 Hz) and slow movement, which tends to be more comfortable for longer sessions.