Healing Frequencies List: What Each Hz Number Means and What’s Been Tested

No frequency has been shown to heal a disease. That includes 528 Hz and 432 Hz.

But the list is real and a lot of people use it. So here is the complete healing frequencies list: all 9 Solfeggio tones, the brainwave bands, the Schumann resonances and the planetary tones, each graded by what research has tested.

Some of it holds up. Some of it is belief, and I label it that way. A lot of what you see on other healing frequency charts has no study behind it at all.

Healing frequencies chart: quick reference

Use this Hz chart to scan the list of healing frequencies. Every row is explained in the sections below.

Grades: “Real science” means the number is correct and standard. “Early research” means small human studies exist and the results are mixed. “Belief” means a spiritual or wellness tradition with no clinical evidence behind the health claims.

What does a “frequency” actually measure?

Most healing frequency pages treat every Hz number as the same thing. They aren’t. Seven different things get called “frequency” on these charts.

• Sound pitch. Cycles per second of a sound wave. Concert A at 440 Hz is a pitch.
• Binaural beat. You hear one tone in each ear, say 200 Hz on the left and 206 Hz on the right. Your brain perceives a 6 Hz beat that isn’t in the air.
• Brainwave. The speed of electrical rhythms recorded from the brain. Alpha runs at about 8 to 12 Hz.
• Pulse rate. How fast a tone or a light is switched on and off. In research, “40 Hz audio” often means 40 pulses a second, not a pure 40 Hz tone.
• Mechanical vibration. A platform or a tool shaking at a set rate.
• Electromagnetic field. Schumann resonances and PEMF devices live here. It’s not sound.
• Ultrasound. Sound above human hearing, around 1 or 3 MHz in physiotherapy.

What are the 7 healing frequencies? The full Solfeggio frequencies list

The 7 healing frequencies are usually listed as 396, 417, 528, 639, 741, 852 and 963 Hz, from the modern Solfeggio chart. Some lists add 174 Hz and 285 Hz to make 9, which is the version below.

The associations in that table are what practitioners and modern wellness charts say. They are not medical findings. I found no qualifying clinical evidence for the health versions of these claims, apart from the early work on 528 Hz below.

Chakra frequencies

Chakra frequency charts are a spiritual framework. They disagree with each other on which tone belongs to which chakra, which tells you they aren’t measurements. They aren’t standard biomedical frequencies, and they don’t back claims about hormones, immunity or disease.

432 Hz: what the studies found

432 Hz is an alternative tuning for the note A. Standard concert pitch sets A at 440 Hz, and some musicians tune to A = 432 instead.

That makes “432 Hz music” normal music with every note shifted down by about a third of a semitone. It is not a track playing one 432 Hz tone. As a producer, I set the reference pitch once at the start of a project. It’s just a setting.

Three small studies have compared the two tunings.

• 2019, Calamassi and Pomponi. 33 healthy volunteers in a double-blind crossover pilot. Heart rate dropped more with music at A = 432 than at A = 440. The authors called for larger trials.
• 2020, Aravena and colleagues. 42 dental patients in a randomized trial. Both 432 and 440 Hz music lowered anxiety compared with no music. Salivary cortisol was lower in the 432 group.
• 2025, Hohneck and colleagues. 43 cancer patients in a randomized crossover trial. Heart rate fell under both 432 and 443 Hz sound interventions, with a slightly bigger drop at 432.

In two of the three, both tunings helped, and 432 came out slightly ahead on a couple of body measures. The samples are small and one study is a pilot. That’s early research, not proof that 432 Hz is “the natural frequency of the universe” or a medically better tuning.

528 Hz: the “love frequency” and three recent trials

528 Hz has more human research behind it than most other Solfeggio tones. Here are three recent trials and what each can and can’t tell you.

• 2026, Brain and Behavior. 162 university students under exam stress were randomly assigned to 528 Hz music, 432 Hz music or no music. Salivary markers called BDNF, CREB and GRP78 differed between groups, but Stroop test scores didn’t.
• 2025, Annals of Neurosciences. 60 people with stage 1 hypertension listened daily to OM chanting composed at 528 Hz. The authors reported better pulse, blood pressure and heart rate variability after a month.
• 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. The meditation group had greater short-term improvements in anxiety, depression, salivary cortisol and systolic blood pressure.

Brainwave frequencies: delta, theta, alpha, beta and gamma

Brainwave bands are the most solid part of any healing frequency list. They’re standard descriptions of electrical activity recorded by EEG, and sources shift the edges by a Hz or so.

Two terms on other charts are misused. “Lambda” is often listed as 100 to 200 Hz. In clinical EEG, lambda waves are short transient waveforms at the back of the head linked to visual scanning. And “epsilon” below 0.5 Hz, tied to mystical states, isn’t a standard clinical category either.

Skip any chart that gives each single Hz a job. “1 Hz releases growth hormone.” “2 Hz regenerates nerves.” “20 Hz stimulates the pineal gland.” None of these are established dose-response facts.

Binaural beats: what the meta-analyses found

Binaural beats are one of the better studied ideas on this page, because they’re easy to test with headphones and a control track.

• 2019 meta-analysis, Garcia-Argibay and colleagues. 22 studies and 35 effect sizes. Overall there was a medium effect (g of about 0.45) across cognition, anxiety and pain. Different outcomes and protocols were pooled together.
• 2025 meta-analysis, Xiong and colleagues. 15 randomized trials in perioperative settings. Binaural beat audio was linked with lower anxiety and some pain outcomes compared with other audio. The trials differed a lot from each other, and the authors want standard protocols.
• 2026 meta-analysis of theta beats, Fatima and colleagues. 13 randomized trials and 630 people. Theta beats were linked with lower pain, but the evidence for pain is low certainty. Anxiety and cognition results were too different to pool.

Schumann resonances: Earth’s 7.83 Hz

Schumann resonances are real. Lightning keeps setting up standing electromagnetic waves between the ground and the ionosphere. The 5 lowest modes average about 7.8, 14.3, 20.8, 27.3 and 33.8 Hz, and the values drift with ionosphere conditions.

The wellness version goes wrong in two places. First, Schumann resonance is an electromagnetic wave, not a sound. A real 7.83 Hz sound is below what most people can hear, so “7.83 Hz tracks” use pulsing or binaural tricks.

Planetary frequencies: the maths is real

The planetary tones come from a simple method. Take how long a planet takes to orbit. Turn that into a frequency. It’s far too slow to hear, so you double it again and again (each doubling is one octave) until it lands in hearing range.

The Earth day works like this. One day is 86,400 seconds, so the frequency is 1/86,400 Hz. Double it 24 times and you get about 194.18 Hz.

NASA and JPL orbit numbers reproduce the commonly published tones to within a fraction of a hertz, so the arithmetic checks out. No planet is making that sound, though. You pick a number and double it.

Frequencies used in real medicine

Some frequencies do show up in actual medicine, and that’s where the confusion starts. The number matches, but the treatment is a device, not an audio track.

PEMF and bone-growth stimulators

The FDA classifies non-invasive bone growth stimulators as prescription Class II devices. They use electrical, magnetic or ultrasonic fields for defined, adjunctive bone-healing uses. That doesn’t mean every PEMF mat or every 1-100 Hz field is FDA approved or proven.

The Cochrane review of electromagnetic stimulation for delayed or non-united fractures found 4 small studies with 125 people. The pooled effect on bone union was not statistically clear, and the authors called the evidence inconclusive. Waveform, field strength and schedule all matter, so there’s no universal “healing window.”

Therapeutic ultrasound

Physiotherapists use sound waves around 1 or 3 MHz. It’s a real medical tool and the effect depends on the condition.

The WHO guideline on chronic primary low back pain conditionally recommends against routine therapeutic ultrasound, based on low-certainty evidence. A 2026 systematic review of low-intensity pulsed ultrasound for established fracture nonunion found 3 randomized trials with 264 people and no clear gain in healing, so it isn’t first-line care. The FDA has authorized specific prescription ultrasound bone-growth devices for defined fracture uses.

Whole-body vibration

A 2026 network meta-analysis in healthy older adults split vibration into bands (under 20 Hz, 20 to under 30 Hz and 30 to 40 Hz). Strength, balance and gait results differed by band. A 2026 meta-analysis of 6 trials and 202 older adults with sarcopenia found better leg strength and physical performance, but no gain in muscle mass.

That’s exercise on a shaking platform, which isn’t the same as listening to a 30 Hz track.

40 Hz gamma stimulation and Alzheimer’s disease: what MIT and others found

This is the one place where 40 Hz has real lab work behind it. Most comes from Li-Huei Tsai’s lab at MIT, and most of it is in mice.

The method is called GENUS, short for gamma entrainment using sensory stimulation. It pulses light, sound or touch 40 times a second. It doesn’t use a continuous 40 Hz tone.

• 2016, Nature (Iaccarino and colleagues, MIT). In Alzheimer’s mouse models, 40 Hz flickering light was linked with less amyloid in the visual cortex and changes in microglia, the brain’s immune cells.
• 2019, Cell (Martorell and colleagues, MIT). Light and sound together were linked with less Alzheimer’s-type pathology and better cognition in mice.
• 2024, Nature (Murdock and colleagues, MIT). In mice, 40 Hz light and sound increased fluid flow in the brain and amyloid clearance through the glymphatic system.
• 2022, PLOS ONE (Chan and colleagues). The first human data: a feasibility study with 43 volunteers, then a placebo-controlled pilot in 15 people with mild Alzheimer’s dementia who used 40 Hz light and sound for an hour a day for about 3 months. It was safe and it raised 40 Hz brain activity. The treated group did better on a face-name memory test, with no meaningful difference on most other cognitive tests.
• 2025, Alzheimer’s and Dementia (Chan and colleagues). A 2-year open-label follow-up of 5 people. The 3 women with late-onset disease did better than a national database of untreated patients on 3 measures, and the 2 men with early-onset disease showed no cognitive benefit. There was no placebo group.

Sound instruments: singing bowls and tuning forks

• Singing bowls. A 2025 systematic review found 19 clinical studies, 9 of them randomized. Some showed possible benefits for mental health and body measures, but the studies differ a lot and carry a risk of bias. None identifies a healing Hz or proves effects on a chakra.
• 128 Hz tuning forks. A 2024 scoping review found them used mainly for fracture screening and for testing vibration sense. I found no support there for claims about nitric oxide, pain relief or joint mobility.

Plenty of “healing frequency music” online layers a tone under ambient music. As a producer, I can tell you a video title only shows what the creator says they did, so don’t read a number in it as a dose.

Healing frequencies for the body, pain and inflammation

People search for a frequency for knee pain, for inflammation, for the body in general. I’d love to give you a number, but no frequency for healing the body has been shown to treat pain or inflammation.

Music listening has been studied for pain. A 2016 meta-analysis of 97 randomized trials and 9,184 people found music-based interventions may reduce pain intensity and emotional distress. A 2017 review of 14 trials found less self-reported chronic pain, especially when people chose their own music. Both come from the NIH’s NCCIH summary of the field.

Binaural beats may add a little in some settings, with low-certainty evidence for pain. No study here points to a specific frequency for a specific joint. Inflammation is a medical process with medical causes, and a claim that a particular frequency reduces it in your body isn’t backed by the sources I reviewed.

How to use healing frequencies without fooling yourself

• Pick sound you like. The chronic pain review found better results when people chose their own music. Your taste beats a chart.
• Treat the Hz label as a theme, not a dose. Nobody has worked out a dose.
• Use it as a relaxation or meditation practice. Start short and stop when it stops feeling good.

Safety: sound dose, flicker and devices

• Volume. 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. WHO also advises keeping your device at no more than 60% of maximum volume. Take breaks, and keep binaural beats quiet.
• Flashing light. Visual flicker products can provoke seizures in people who are susceptible. A 2026 Epilepsy Foundation consensus advises avoiding bright flashing patterns in the 10 to 20 Hz range in media. That applies to light, not audio. If you’ve had a seizure or have light sensitivity, skip flicker.
• Prescription devices. Bone stimulators, ultrasound and similar devices have device-specific precautions. Follow the label and your clinician. Skip lists from the internet.
• If it feels wrong. Dizziness, headache, ringing in your ears or a spike of anxiety are reasons to stop or turn it down. They aren’t “detox symptoms.”
• When to get help. If you have serious or lasting symptoms, a diagnosed condition, take medication, are pregnant or are in a mental health crisis, talk to a clinician. Don’t replace prescribed treatment or delay care for a playlist.

Claims to skip: what other healing frequency lists get wrong

Rife frequencies are a clear case. Cancer Research UK says there is no reliable evidence that Rife machines work as a cancer cure, and it warns that stopping cancer treatment for an unproven one can harm your health. If someone sells you a frequency for cancer, walk away.

Thinking about buying a frequency mat or device? Read how to choose spiritual wellness products first, and ignore any listing that promises to treat a condition.

Healing frequencies FAQ

What are the 7 healing frequencies?

The 7 healing frequencies are 396, 417, 528, 639, 741, 852 and 963 Hz, from the modern Solfeggio chart. The meanings attached to them are traditional and spiritual, and no clinical evidence supports the health effects.

What is the best healing frequency?

No best healing frequency has been proven. The best-supported options are music you enjoy and, in some medical settings, binaural beats.

Do healing frequencies work?

It depends on what “work” means. For relaxation, some people report it, and music and binaural beat studies support benefits for anxiety and pain in some settings. For treating a disease, there’s no evidence a frequency works.

Does 40 Hz help Alzheimer’s?

It’s being tested, not proven. MIT labs reported encouraging results in mice, and small human studies used a purpose-built 40 Hz light and sound device. A large pivotal trial has no published results yet, and listening to 40 Hz audio alone hasn’t been shown to help.

How I put this list together

I started with the frequencies and claims in my earlier draft of this guide. For each one I looked for evidence that matched the exact sound, the people tested and the outcome. A number on its own didn’t count. I used WHO, FDA, NIH and NCCIH pages, Cochrane reviews and peer-reviewed studies on PubMed, and I left out retailer pages, affiliate sites, testimonials and unsourced frequency charts.

This isn’t a registered systematic review. If I missed a study, tell me through the contact page and I’ll check it and fix this page if it changes anything.

Freqro sells a healing frequencies MP3 download with 100+ studio-mastered tracks, including Solfeggio tones from 396 to 963 Hz and binaural beats organized by chakra.

Keep reading

• How to use Solfeggio frequencies in meditation
• 432 Hz vs 528 Hz: which one to use
• 888 Hz frequency benefits and the abundance claims
• The chakra frequency chart