528 Hz (528 hertz) is a tone from the modern Solfeggio chart, nicknamed the “love frequency” or “miracle tone” and often sold as a 528 Hz healing frequency. It has more human research behind it than most other Solfeggio tones, but that research is small and early.
Four small human studies and one cell study cover the 528 Hz frequency benefits so far. They point to short-term 528 Hz effects on stress markers and mood, mostly from music. They can’t separate the pitch from the music, the setting or what listeners expect, and none shows that 528 Hz repairs DNA.
Below: what 528 Hz is, a claim-by-claim check, each study, how it compares with 432, 639 and 963 Hz, and what a 528 Hz tuning fork can and can’t do.
What is 528 Hz?
528 Hz means 528 cycles per second. It’s one of 9 tones on the modern Solfeggio chart, where the 528 Hz meaning is love, transformation and the solar plexus chakra (some charts say the heart chakra). I found no academic music history source that describes that chart, so treat it as a modern wellness system. For the full chart, see the healing frequencies list.
As a note, 528 Hz is about 16 cents sharp of C5 (523.25 Hz) in standard A = 440 tuning. In A = 432 tuning, C5 is about 514 Hz. So 528 Hz sits between notes in both tunings.
528 Hz frequency benefits: claims vs evidence
| Claim | What the evidence shows | Verdict |
|---|---|---|
| Lowers stress hormones | One 9-person pilot with 5 minutes of 528 Hz music | Early research |
| Raises oxytocin | Same 9-person pilot | Early research |
| Raises BDNF (a brain protein) | One trial of 162 students, measured in saliva | Early research |
| Improves anxiety and mood | Small studies, mixed with other ingredients | Early research |
| Lowers blood pressure | One 60-person chanting trial that can’t isolate 528 Hz | Early research |
| Repairs DNA | One cell study measured cell survival, not DNA repair | Not supported |
| Restructures water, scalar waves, aura or biofield | No peer-reviewed support found | Not supported |
| Boosts creativity, cuts cravings, helps weight loss | No human study of 528 Hz found | Not supported |
| Attracts wealth, opens the heart chakra | Belief with no way to test it | Belief |
528 Hz studies and research: what each one found
- 2018, Akimoto and colleagues (Health). 9 healthy adults (1 man, 8 women, aged 26 to 37) heard 5 minutes of 528 Hz music and 5 minutes of 440 Hz music on separate days, blinded to which was which. After 528 Hz, salivary cortisol fell, oxytocin rose and the tension-anxiety mood score improved. None of those changed after 440 Hz. It’s a pilot, and the authors note the small sample.
- 2026, Brain and Behavior. 162 students were randomly assigned to 20 minutes of 528 Hz music, 432 Hz music or no music. Salivary BDNF and CREB were higher after 528 Hz than with no music, while GRP78 was higher in the 432 group. Stroop test scores didn’t differ. A saliva marker is not a health outcome.
- 2025, Annals of Neurosciences. 60 people with stage 1 hypertension listened daily to OM chanting composed at 528 Hz. The authors reported lower pulse and blood pressure after a month, plus better heart rate variability, wellbeing and sleep. But chanting, meditation, music and expectation came bundled with the tuning, so you can’t credit 528 Hz.
- 2026, Cureus. 100 adults did a 60-minute sound meditation with recorded 528 Hz audio plus singing bowls, gongs, bells and tingshas, and were compared with a remote music group over 4 weeks. The meditation group improved more on anxiety, depression, salivary cortisol and systolic blood pressure. The same problem applies: too many ingredients to credit the pitch.
- 2017, Babayi and Riazi (Journal of Addiction Research and Therapy). Human astrocyte cells in a dish were damaged with ethanol, then exposed to 528 Hz sound at 80 dB. Cell survival rose by about 20%. That’s cells in a dish, and the study measured survival, not DNA repair.
The pattern is the same in all five. The samples are small, the exposures are short, and most trials test music or chanting, not a pure 528 Hz tone. None compared 528 Hz with a matched track at a nearby pitch, which is the test that would show whether the pitch matters. If you’re asking which 528 Hz benefits are real, the best-supported one is relaxation, and that comes from 528 Hz music. Whether the 528 part matters is unknown.
528 Hz vs 432 Hz, 639 Hz and 963 Hz
| Tone | Nearest note | Pairing on modern charts | Research |
|---|---|---|---|
| 174 Hz | F3, 6 cents flat | Pain relief and grounding, usually no chakra | No health trial. 1 sleep study used it as a carrier tone |
| 432 Hz | A in A = 432 tuning | “Natural” tuning, heart chakra on 432-based charts | 3 small studies on music tuned to A = 432 |
| 528 Hz | C5, 16 cents sharp | Love, solar plexus chakra | 4 small human studies, 1 cell study |
| 639 Hz | D#5, 46 cents sharp | Relationships, heart chakra | None found |
| 963 Hz | B5, 44 cents flat | Oneness, crown chakra | None found |
528 Hz isn’t stronger than the others. It’s just the one people have tested most. 528 Hz vs 963 Hz and 528 Hz vs 639 Hz come down to the same thing: different pitches with different chart meanings and no head-to-head research. The 432 studies are on the healing frequencies list, and the chakra pairings are on the chakra frequency chart.
528 Hz tuning fork benefits
No trial I found tests a 528 Hz tuning fork for any health outcome. The documented medical uses of a tuning fork are checking vibration sense and screening for fractures, mostly with 128 Hz forks, according to a 2024 scoping review. So the claims about 528 Hz forks and pain, energy or healing have no test behind them.
If you like the sound, use a fork as a meditation tool. Strike it on a rubber activator or your knee, never a hard surface, and hold it a few inches from your ear or body. Skip direct contact if you’re pregnant, have an implant or a diagnosed condition, unless a clinician says it’s fine.
Is 528 Hz safe? How to listen
A 528 Hz track at moderate volume is low risk for most people. The risk is volume, not pitch. WHO says you can safely listen at 80 dB for up to 40 hours a week, and at 90 dB the safe time drops to 4 hours a week. It also advises keeping your device at no more than 60% of maximum volume.
Nobody has tested a dose, so there’s no right schedule and no proof that daily listening does anything. Start short and stop if you feel dizzy, get a headache or hear ringing. If a symptom lasts, see a clinician. 528 Hz can sit alongside care. It doesn’t replace it.
528 Hz FAQ
What is 528 Hz?
528 Hz is a pitch of 528 cycles per second. On the modern Solfeggio chart it’s called the love frequency. As a note it sits about 16 cents sharp of C5.
What are the benefits of 528 Hz?
Small studies of 528 Hz music report short-term changes in stress markers and mood. They can’t separate the pitch from the music, and none shows a medical benefit.
Does 528 Hz heal DNA?
No. The claim traces to one cell study where 528 Hz sound raised the survival of alcohol-damaged cells in a dish by about 20%. It didn’t measure DNA repair and it wasn’t done in people.
What does 528 Hz do to the brain?
In a 162-student trial, 20 minutes of 528 Hz music raised salivary BDNF and CREB compared with no music, with no change in Stroop test scores. That’s a marker, not a proven brain benefit.
Is 528 Hz safe?
At moderate volume, yes for most people. The risk is loudness. WHO advises no more than 60% device volume and about 80 dB for up to 40 hours a week.
Can I listen to 528 Hz every day?
No harm is shown at a moderate volume, and no benefit from daily listening is shown either. Nobody has tested a dose.
What note is 528 Hz?
About C5, 16 cents sharp. C5 is 523.25 Hz in A = 440 tuning and about 514 Hz in A = 432 tuning.
Does 528 Hz help with sleep, weight loss or pets?
I found no study that tests 528 Hz for any of those. One hypertension trial reported better sleep after a month of 528 Hz OM chanting, but chanting and meditation were part of it.
Sources and references (10)
Every study and safety figure on this page traces to one of these. Notes: C5 and the cents offsets are standard equal-temperament arithmetic.
528 Hz studies
- Akimoto K, et al. Effect of 528 Hz Music on the Endocrine System and Autonomic Nervous System. Health, 2018;10:1159-1170. https://www.scirp.org/html/2-8204397_87146.htm
- Bozok ÜG, et al. Acute Music-Frequency Exposure Modulates Salivary Stress and Neurotrophic Markers in Young Adults: A Randomized Controlled Trial. Brain and Behavior, 2026. https://pubmed.ncbi.nlm.nih.gov/42043979/
- Bhoot A, et al. Effect of OM Chanting of 528Hz Frequency on Heart Rate Variability, Psychological Wellbeing, and Quality of Sleep in Patients of Hypertension: A Randomised Controlled Trial. Annals of Neurosciences, 2025. https://pubmed.ncbi.nlm.nih.gov/41395351/
- Ravikumar H, et al. Effects of a Sound-Based Meditative Intervention on Anxiety, Depression, Salivary Cortisol Levels, and Blood Pressure: A Randomized Controlled Trial. Cureus, 2026. https://pubmed.ncbi.nlm.nih.gov/42694510/
- Babayi T, Riazi GH. The Effects of 528 Hz Sound Wave to Reduce Cell Death in Human Astrocyte Primary Cell Culture Treated with Ethanol. Journal of Addiction Research and Therapy, 2017. https://www.semanticscholar.org/paper/The-Effects-of-528-Hz-Sound-Wave-to-Reduce-Cell-in-Babayi-Riazi/2a84f0c89a75373451077c30607f567a5707b50c
Tuning forks, safety and tuning
- De Marco G, et al. The role of tuning fork in the evaluation of musculoskeletal disorders and pallesthesia: a scoping review. Journal of Bodywork and Movement Therapies, 2024. https://pubmed.ncbi.nlm.nih.gov/38763599/
- World Health Organization. Deafness and hearing loss: Safe listening (Q&A). https://www.who.int/news-room/questions-and-answers/item/deafness-and-hearing-loss-safe-listening
- Calamassi D, Pomponi GP. Music Tuned to 440 Hz Versus 432 Hz and the Health Effects: a double-blind cross-over pilot study. Explore, 2019. https://pubmed.ncbi.nlm.nih.gov/31031095/
- Aravena PC, et al. Effect of music at 432 Hz and 440 Hz on dental anxiety and salivary cortisol levels in patients undergoing tooth extraction: a randomized clinical trial. Journal of Applied Oral Science, 2020. https://pubmed.ncbi.nlm.nih.gov/32401941/
- Hohneck A, et al. Differential effects of sound interventions tuned to 432 Hz or 443 Hz on cardiovascular parameters in cancer patients. BMC Complementary Medicine and Therapies, 2025. https://pubmed.ncbi.nlm.nih.gov/39844155/