Interactive Solfeggio & Pure Tone Frequency Synthesizer
Tap any reference frequency below (174 Hz – 963 Hz, including 432 Hz and 528 Hz) to synthesize a clean harmonic tone live in your browser.
Select Reference Frequency (Hz)
What is 528 Hz?
528 Hz is the fifth of the nine Solfeggio frequencies and by far the most popular. In sound-healing circles it is called the "love frequency" or the "miracle tone" and associated with clarity, transformation and emotional balance. On a piano it falls between C5 (523 Hz) and C♯5 (554 Hz), very close to a high C.
The DNA repair claim
The best-known claim is that 528 Hz "repairs DNA". This idea traces back to sound-healing books from the late 1990s and is often repeated online, but there is no credible scientific evidence that listening to a tone changes or repairs human DNA. Be cautious of products that promise physical healing from a frequency.
What small studies have found
A few small studies have looked at 528 Hz more modestly. A 2018 pilot study published in Health exposed a small group of volunteers to music tuned to 528 Hz and reported lower stress-related hormone levels compared with standard tuning. With so few participants, results like this are a reason for further research, not proof.
The more reliable takeaway is general: slow, pleasant sound that you associate with calm can help you relax, breathe more slowly and switch off. 528 Hz can play that role well, especially with the soft shimmer that removes the clinical edge of a pure sine wave.
A 10 minute 528 Hz relaxation
- Press play and lower the volume until the tone is gentle.
- Add ocean waves or rain at a low level from Sounds.
- Breathe in for four counts and out for six, letting the tone anchor your attention.
- After ten minutes, stop the tone and sit for a moment in silence.
You can switch to any other Solfeggio tone, or to 432 Hz, in the Tones panel.
Frequently asked questions
What does 528 Hz do?
It is a tone traditionally associated with calm and transformation. Claims of physical healing, including DNA repair, are not supported by scientific evidence. Many people find it relaxing.
Is 528 Hz safe to listen to?
Yes, at a comfortable volume. Like any pure tone, it can become tiring if played loudly for a long time.
Should I listen to 528 Hz while sleeping?
You can, at a very low volume. Many people prefer to use it for a short relaxation before bed and switch to soft noise or rain for the night.