432 Hz Song Converter Warm 432 Hz (-31.8 cents)
Import a supported audio file and retune it from a 440 Hz to a 432 Hz reference in your browser. Export the result as WAV.
440 → 432 Hz3-second A/B previewUncompressed WAV export
Free to use · Your sound, your settings
Sound that feels like frequency, not noise.
Play a sample now, including a 3-second 440/432 Hz comparison. Create an account to explore frequencies, soundscapes and your own audio tools.
Interactive Audio Console & Sound Generator
Binaural Brown (432 Hz)
Brown noise layered with a 432 Hz tone. Listen to the sample, then explore the full controls in HEARTz.
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What HEARTz Does
3 ways to explore sound.
Start with a soundscape, create a frequency or retune your own audio.
How It Works
From first sound to your own setup
Create a free account, choose a sound and adjust it in your browser.
Pick your sound
Choose a ready-to-play session, dial in a custom frequency, or import a supported audio file to retune.
Email or Google sign-in
Set your level
Start at a comfortable low volume. Use stereo headphones to hear the intended binaural difference.
Smooth, click-free fades
Listen or keep
Listen in your browser or export an uncompressed WAV file where available.
Studio-quality WAV export
Private By Design
Your library stays in this browser.
Audio processing and saved settings stay local to this browser. Your sign-in is handled by Firebase Authentication; your library does not sync across devices yet.
- ✓0 cloud uploads
Even full songs are converted directly in your browser’s local memory.
- ✓Presets saved locally
Your favorite settings are stored right in your browser (IndexedDB) with instant recall.
- ✓Export anytime
Back up or move your custom frequency presets as clean JSON files.
IndexedDB // Local Storage
STATUS: ACTIVE
Deep Ground 432 Hz
Pure 432 Hz tone + Brown Noise
Ocean Waves 7.83 Hz
Schumann Resonance + Binaural Waves
Soft Focus 528 Hz
528 Hz Carrier + Pink Noise
Library sync: not available yet ● Local Only
Audio Standards
Built for clear, direct sound control
Your audio tools run in the browser, with uncompressed WAV export where available.
0 file uploads
Your audio files and music never leave your device. All retuning happens locally in your browser’s memory.
Real-time playback
Sound waves are generated live by your browser with smooth volume curves to prevent clicks and pops.
Lossless WAV export
Export uncompressed WAV files ready for headphones, offline listening, or use in creative projects.
Questions & Answers
Frequently Asked Questions
Everything you need to know before your first listening session.
What makes 432 Hz different from standard 440 Hz?
A4 = 440 Hz is a common tuning reference. Retuning it to A4 = 432 Hz lowers pitch by about 31.8 cents. Listen to both and choose what you prefer.
Do I need headphones to use this?
Speakers or headphones can play tones and retuned music. For binaural beats, use stereo headphones so each ear receives a different frequency.
Why do you recommend starting at low volume?
Your device and headphones affect the actual sound level. Start low, raise it only to a comfortable level, and stop if listening feels uncomfortable.
Is HEARTz free and private?
HEARTz is free to use. Sign in with email or Google. Audio files are processed in your browser; your account uses Firebase Authentication, while saved settings and library items stay in this browser.
Can I use HEARTz on my phone?
Yes. HEARTz has a compact layout for mobile browsers. Samples and the main tools are available on a phone, but long audio conversions may be slower or limited by device memory. A desktop browser offers more room for detailed controls and larger files.
Why is there no sound on my phone?
Tap Play or Start, check your media volume and output device, then try headphones. On iPhone, older browser versions may silence generated Web Audio when the Ring/Silent switch is on. HEARTz requests a playback audio session where the browser supports it; if sound is still missing, try switching Silent off and reopening the page.
Get Started
Experience pure resonance.
Create an account, explore the tools and keep your settings in your browser.
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