Solfeggio frequencies are a set of nine tones that have become a staple of meditation playlists and sound baths. If you've wondered what 174 Hz, 396 Hz or 963 Hz is "for," this chart puts them all in one place, with a clear note on what is tradition and what is science.
Where Solfeggio frequencies come from
The name comes from solfège (do, re, mi…), which grew out of a medieval Latin hymn. In the 1970s–90s, several authors proposed six specific frequencies, later extended to nine, and linked them to healing properties. These associations come from modern spiritual and sound-healing traditions. Scientific research on specific tones is still limited. The best-studied is 528 Hz, and even that rests on small studies.
That doesn't make them useless. Calm, steady tones can support relaxation and focus. Think of the chart below as a menu of intentions rather than a list of medical effects.
Solfeggio frequencies chart
| Frequency | Traditionally associated with | Popular everyday use |
|---|---|---|
| 174 Hz | Grounding, physical comfort | Body scan, easing tension after exercise |
| 285 Hz | Renewal, energy field | Afternoon reset, restorative rest |
| 396 Hz | Releasing fear and guilt | Journaling, letting go of a hard day |
| 417 Hz | Facilitating change | New routines, fresh-start meditations |
| 528 Hz | Transformation, "love frequency" | Stress relief, bedtime routine |
| 639 Hz | Connection and relationships | Partner or family relaxation time |
| 741 Hz | Clarity and expression | Creative work, clearing mental clutter |
| 852 Hz | Intuition, inner calm | Quiet evening meditation |
| 963 Hz | Higher awareness | Deep meditation, mindfulness practice |
How to choose a frequency
Start with your goal for the moment, not the grandest claim:
- To unwind before sleep: 528 Hz or 174 Hz at low volume. Pair it with our sleep habits guide.
- To shake off stress: 396 Hz or 528 Hz for 10–15 minutes.
- To focus: 741 Hz, or try binaural beats in the alpha or beta range.
- For meditation: 852 Hz or 963 Hz.
Most important of all: pick the tone you actually enjoy. A sound you find pleasant is the one you'll keep using.
Beyond the nine: other popular frequencies
- 7.83 Hz, the Schumann resonance: the natural electromagnetic "heartbeat" of Earth's atmosphere, often used for grounding meditations.
- 432 Hz: an alternative tuning many listeners find warmer than standard 440 Hz.
- Brainwave ranges: delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–12 Hz) and beta (12–30 Hz), usually delivered as binaural beats.
Calminity keeps a longer reference list on our healing frequencies page.
How to play a precise frequency
YouTube tracks are convenient, but many are mixed with music or compressed, so the exact frequency can be unclear. A dedicated generator produces a clean sine wave at the exact number you choose. The Calminity frequency generator covers 0.01 Hz to 100,000 Hz, so every tone on this chart is one entry away.
This article is for general wellness information only and is not medical advice. Calminity products are not intended to diagnose, treat, cure or prevent any disease.