396 Hz frequency
396 Hz is the first of the six core solfeggio tones and carries the syllable UT. It lands close to G4 on a piano.
- SyllableUT
- Nearest noteG4 +18¢
- Period2.53 ms
- Wavelength in air0.87 m
Pair it with slow breathing: four seconds in, six out. The tone becomes a timer for your attention rather than a treatment.
What 396 Hz is claimed to do
- Linked to releasing fear, guilt and “blockages”
- Mapped to the root chakra in many charts
- Used at the start of evening wind-down routines
What the evidence says
No controlled trial has isolated 396 Hz. Emotional release claims come from the Puleo/Horowitz framework, not from measurement. Any calm you feel is real, but it is shared with many steady sounds.
Where the number comes from
The modern solfeggio list traces to Joseph Puleo and Leonard Horowitz in the 1990s, who derived the numbers by digit-reduction of verse numbers in the Book of Numbers. It is not the medieval scale Guido d’Arezzo taught with the hymn “Ut queant laxis”, which named pitches, not fixed frequencies.
396 Hz: common questions
What is 396 Hz used for?
In solfeggio practice it is used to “release fear and guilt”. In plain terms, people use it as a calming background tone during meditation.
Which chakra is 396 Hz?
Most modern charts pair it with the root chakra. Those mappings are recent conventions, not part of traditional chakra teachings.
What note is 396 Hz?
Just above G4 (392 Hz), roughly 18 cents sharp in A = 440 tuning.