Solfeggio frequency
285 Hz — Solfeggio Frequency
285 Hz is one of the extended Solfeggio tones, sitting in the low-mid range between the notes C#4 and D4.
Tap a note to play its exact pitch — C1 to B8
Press Space to play
About the 285 Hz tone
285 Hz falls in the warm low-mid part of the spectrum, low enough to feel grounded but high enough to come through clearly on most headphones and speakers.
Like 174 Hz, it is one of the extended Solfeggio tones rather than one of the classic six. This page plays it as a clean, steady sine wave, with no claims attached — set the volume and waveform to taste.
On a keyboard, 285 Hz lands between C#4 and D4, closer to the lower of the two — the generator shows exactly how many cents it sits from the nearest note. That places it a step above 174 Hz and below the classic 396 Hz, so it stacks naturally between them if you like to build a drone from several tones. Its octave up is 570 Hz.
Technical details
- Frequency
- 285 Hz
- Nearest note
- C#4 (+48¢)
- Category
- Solfeggio frequency
- Period
- 3.51 ms
- Wavelength (air)
- 1.20 m
- Octave up / down
- 570 Hz / 142.5 Hz
Common uses
- A low-mid tone for ambient or meditation layering
- Compare against neighbouring Solfeggio tones
- A steady drone under music at low volume
Frequently asked questions
What note is 285 Hz?
285 Hz falls between C#4 and D4, nearer to C#4 — the generator shows the nearest note and the exact cents difference so you can match it on a keyboard or tuner.
Is 285 Hz one of the six Solfeggio frequencies?
No — like 174 Hz, it’s one of the extended Solfeggio tones added around the traditional six (396, 417, 528, 639, 741 and 852 Hz) rather than part of the classic set.
How do I keep 285 Hz playing continuously?
Press play and leave the tab open; the tone loops seamlessly with no gaps or clicks. You can adjust the volume or switch waveforms at any time, and nothing is downloaded — the sound is generated in your browser.