Play solfeggio tones, isochronic pulses, and ambient soundscapes together — or layer them all at once in The Lab. Everything is synthesized live in your browser — no downloads, no streaming.
MI in the solfeggio scale, 528 Hz sits at the midpoint of the nine tones and is by a wide margin the best known — often nicknamed the "Miracle Tone" or "Love Frequency." It is the tone most listeners search for by name, and its pitch, close to the C above middle C, is one many people find naturally pleasant to sit with for long stretches.
The tradition associates 528 Hz with the heart chakra and frames it around love, transformation, and positive change — the idea of a tone that opens rather than grounds or releases. You may see it credited elsewhere with "DNA repair"; that specific claim traces back to a 1990s book rather than any scientific study, and there is no evidence that sound affects DNA in that way, so it is not repeated here.
This page opens with 528 Hz already highlighted on the Frequencies tab — tap the card to start it. It anchors two of the built-in mood presets: "Focus" (paired with 417 Hz) and "Meditate" (paired with 963 Hz), and works well as a solo tone under a soft ambient layer like Tibetan bowls or gentle rain for a longer sit.
A theta-band binaural beat or isochronic pulse is a popular pairing for a heart-centered meditation with 528 Hz — start the tone here, then add a pulse from the Binaural or Isochronic tab, or combine everything at once in The Lab.
528 Hz is part of the same modern nine-tone set as the rest of the scale, popularized in the late 20th century rather than drawn from an ancient source, and the love/transformation framing reflects how it is used in practice, not a proven physiological effect. Treat it as a relaxation and meditation aid, never a medical treatment. Compare it with the other eight tones on the full solfeggio frequencies chart.
Mood Presets
Solfeggio frequencies are a set of nine pure tones, spanning 174 Hz to 963 Hz, used as focal points in meditation and relaxation practice. Despite the name — borrowed from the medieval solfège syllables of Guido d'Arezzo — the nine Hz values themselves are a modern set that was popularized in the 1970s–90s, and each has since picked up a traditional intention listeners use to frame a session. This free online generator synthesises every tone directly in your browser using the Web Audio API. No downloads, no plugins, no account required.
You can play any single frequency or layer multiple tones simultaneously. Pair them with ambient soundscapes (rain, ocean, forest, thunderstorm) for a deeper meditative environment, set a session timer, or apply a mood preset to quickly load a curated combination of frequencies.
The nine solfeggio frequencies and the intentions popularly associated with each:
| Frequency | Name | Chakra |
|---|---|---|
| 174 Hz | Foundation | Root |
| 285 Hz | Quantum Cognition | Sacral |
| 396 Hz | Liberation | Solar Plexus |
| 417 Hz | Transmutation | Sacral |
| 528 Hz | Miracle Tone | Heart |
| 639 Hz | Connection | Throat |
| 741 Hz | Awakening | Third Eye |
| 852 Hz | Spiritual Order | Crown |
| 963 Hz | Divine Connection | Transcendent |
Solfeggio frequencies are a set of nine pure tones — 174, 285, 396, 417, 528, 639, 741, 852, and 963 Hz — used in meditation and relaxation practice. The name borrows from solfège, the medieval six-syllable system (ut–re–mi–fa–sol–la) attributed to Guido d'Arezzo in the 11th century, but the specific Hz values are a modern invention popularized in the 1970s–90s and are not found in Gregorian chant. In practice, each tone has come to be associated with a particular intention — releasing fear, connection, clarity — that listeners use as a focus during a session.
528 Hz is the best-known solfeggio frequency, often nicknamed the "Miracle Tone" or "Love Frequency." In the solfeggio tradition it is associated with transformation and renewal. You may also see it credited with "DNA repair" — that claim originates from a 1990s book, not from any scientific study, and there is no evidence that listening to a tone affects DNA. It remains a popular choice as a standalone meditation tone or layered with ambient sounds simply because many listeners find its pitch pleasant to sit with.
432 Hz refers to an alternative musical tuning standard (A4 = 432 Hz instead of the modern 440 Hz). Solfeggio frequencies are a separate, unrelated system — nine specific tones (174, 285, 396, 417, 528, 639, 741, 852, 963 Hz) that are not derived from any tuning standard or musical scale. Both are popular in the meditation and sound-therapy community, but they are distinct concepts.
Yes. This generator lets you activate any combination of the nine frequencies simultaneously. Each tone runs independently using the Web Audio API, so you can layer multiple Hz tones together without any interference or signal loss.
Sine wave produces the purest, cleanest tone and is the most common choice for meditation and relaxation sessions. Triangle is slightly softer with gentle harmonic overtones. Sawtooth adds brightness and edge. Square creates a more hollow, resonant character. For focused listening or sleep, sine or triangle are recommended.
Specific healing claims around solfeggio frequencies are not yet supported by large peer-reviewed clinical trials. However, sound therapy and the use of sustained tones for relaxation is an active area of research, with a growing body of evidence linking rhythmic auditory stimulation to reduced anxiety, improved focus, and better sleep quality. Many practitioners use these frequencies as part of a broader mindfulness or meditation practice.