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285 Hz
Free healing-frequency, solfeggio & Om sound generator
A warm, mid-low tone from the extended solfeggio set — pure tone or soft drone, with a timer.
Start at a low volume and turn up slowly. Pure tones can sound louder than music at the same setting, especially higher frequencies.
| Frequency | 285 Hz (285 vibrations per second) |
|---|---|
| Nearest musical note (A=440) | C#4 +48 cents |
| Wavelength in air | about 120 cm |
| Period of one cycle | 3.51 ms |
| Solfeggio syllable | — |
| Which set | Extended set (later addition) |
| Popular claim | Promoted as a frequency for "tissue regeneration" and restoring the body's "energy field" (a claim, not a demonstrated effect) |
285 Hz is one of the later additions to the solfeggio scale. Joseph Puleo's original six tones began at 396 Hz; 174 and 285 Hz were added below them (and 963 Hz above) to create the nine-frequency set that most playlists use today. Its digits follow the same 3-6-9 numerology as the rest (2 + 8 + 5 = 15, and 1 + 5 = 6).
Unlike 174 Hz (practically an F) or 741 Hz (practically an F#), 285 Hz falls almost exactly halfway between two piano keys: it is about 48 cents above C#4 (277.18 Hz) and 52 cents below D4 (293.66 Hz). That is close to a quarter-tone. Played alone, you will not notice anything odd. Played alongside a piano, guitar or a singing bowl tuned to Western pitch, it can sound slightly "off" — which is worth knowing if you plan to layer it with instruments.
285 Hz is usually marketed as a frequency that "heals tissue", "regenerates cells" or "restructures the energy field". There is no scientific evidence for any of those effects, and no credible mechanism by which an audible tone at a comfortable volume would repair tissue. If you have an injury or illness, get it looked at properly.
As a listening experience, 285 Hz is a soft, rounded tone that works well on ordinary laptop speakers and is easy to leave running quietly in the background while you stretch, rest or read.
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.
Because it falls almost exactly between C#4 and D4 — roughly a quarter-tone away from both — so it does not match any key on a standard-tuned instrument.
No. That claim comes from solfeggio marketing and is not supported by research. A tone can be pleasant and relaxing, but it does not repair the body.
No. It was added later, together with 174 Hz and 963 Hz, to extend the original six-tone set.
Yes. 285 Hz is high enough that most laptop and phone speakers reproduce it reasonably well, though headphones still give a cleaner, fuller tone.