Solfeggio frequency
417 Hz — Solfeggio Frequency (“RE”)
417 Hz is the second of the traditional Solfeggio frequencies, labelled “RE”, sitting close to the note G#4.
Tap a note to play its exact pitch — C1 to B8
Press Space to play
About the 417 Hz tone
417 Hz sits just above 396 Hz in the series, still comfortably in the mid-range where most playback equipment performs well.
As with the rest of the Solfeggio set, this page simply plays a clean 417 Hz sine tone and leaves any interpretation to you — no claims, just the frequency.
In pitch terms 417 Hz is closest to G#4 (the A-flat above middle C), a little sharp of it — the generator shows the exact cents. It sits one step up from 396 Hz and below 528 Hz, which makes the three a common trio to A/B against each other. For a thicker sound, add its octave at 834 Hz, or switch the waveform to hear the same pitch shift from a smooth sine to a reedier triangle or square.
Technical details
- Frequency
- 417 Hz
- Nearest note
- G#4 (+7¢)
- Category
- Solfeggio frequency
- Period
- 2.40 ms
- Wavelength (air)
- 82.3 cm
- Octave up / down
- 834 Hz / 208.5 Hz
Common uses
- A mid-range tone for meditation or ambient use
- Compare directly with 396 Hz and 528 Hz
- A fixed reference near the note G#4
Frequently asked questions
What note is 417 Hz?
417 Hz is closest to G#4 (A-flat above middle C), sitting slightly above it. The generator shows the nearest note and the exact cents difference for matching it on a keyboard or tuner.
Is 417 Hz a Solfeggio frequency?
Yes — it’s the second of the six traditional Solfeggio tones, labelled “RE”, between 396 Hz below it and 528 Hz above it.
Can I loop 417 Hz for a long time?
Yes. Press play and the tone loops seamlessly for as long as the tab stays open, with no clicks or gaps. Volume and waveform can be changed anytime, and the sound is generated in your browser with nothing to install.