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174 Hz
174 Hz is a single, steady sine tone — one pure pitch just below F3, with no harmonics and no movement. It is the lowest tone in the solfeggio set and the deepest of the three on this site. Suits listeners who want a plain, unchanging drone rather than rain, noise, or texture.
Ready to play
Stack this under rain or a fire, keep the blend, and play it with your screen off. Slo, on iOS, Android and Mac.
What 174 Hz sounds like
The file holds one sine wave at 174 Hz with no audible harmonics, identical in both channels, looped so that nothing changes from one minute to the next. The pitch sits a fraction below F3, low enough to read as a hum rather than a whistle. There is no hiss, rain, or texture behind it. A bare tone is either exactly what you came for or far too plain, and a few seconds of listening will tell you which.
Where the solfeggio numbers come from
Solfeggio tones are a modern tradition. The set was assembled in the 1970s from a numerological reading of the Book of Numbers, not from documented Gregorian practice, and no clinical guideline or systematic review supports the healing claims attached to them. People use these tones because they find them pleasant to listen to. That is the honest reason, and it is reason enough.
Compare it by ear against the 285 Hz tone and the 396 Hz tone, or browse every browser player from the sound library index. A bare sine is easier to sit with when something textured sits under it — open the 174 Hz and brown noise blend in the free sound mixer and move either layer to taste.
Frequently asked questions
What musical note is 174 Hz?
It sits just below F3, which is 174.61 Hz in standard concert tuning. To most ears it reads as a low F.
Does a 174 Hz tone do anything to the body?
No claim of that kind is supported. No clinical guideline or systematic review backs the properties traditionally attached to solfeggio frequencies. Play it if you like how it sounds.
Do I need headphones for this tone?
No. The tone is identical in both channels, so speakers and headphones deliver the same thing.
Can I layer 174 Hz with other sounds?
Yes. Add it in the free browser mixer alongside noise, rain, or fire, and set each layer to its own level.