432Hz Converter
Retune any song from standard A=440 down to A=432, or up to the 528 Hz tuning, without changing its speed. It all runs in your browser, so your music never leaves your device.
How to convert a song to 432 Hz
- Drop in a song (MP3, WAV, M4A, FLAC, OGG, or AAC).
- Choose a tuning: 432 Hz, 528 Hz, or back to 440 Hz.
- Keep the original speed, or pick tape style to let pitch and speed move together.
- Press Convert, listen to the result, then download it as MP3 or WAV.
What converting to 432 Hz actually does
Almost all modern music is tuned so the A above middle C sits at 440 Hz, the international standard. Converting to 432 Hz lowers every note by the same small amount, a ratio of 432 to 440, which works out to about 32 cents, roughly a third of a semitone. Chords, melodies, and the relationships between notes stay exactly the same. The whole song just sits a little lower, and to many ears a little warmer and softer.
This converter does it the clean way. It resamples the audio to drop the pitch by that exact ratio, then time-stretches it by the opposite amount, so the song keeps its original length and tempo. A 1.8 percent stretch is small enough to stay transparent on almost any material. If you prefer the sound of a slowed tape machine, pick tape style: pitch and speed drop together and nothing is stretched at all.
432 Hz, 528 Hz, and the honest science
People convert music to 432 Hz because they like how it feels: calmer, rounder, less bright. That is a real listening preference, and reason enough. You will also find claims online that 432 Hz or 528 Hz tuning repairs DNA, matches the vibration of the universe, or was banned for sinister reasons. There is no solid evidence for any of it, and we would rather tell you that than sell it to you. One small pilot study in 2019 reported slightly lower heart rates with 432 Hz music, which is interesting but far too small to settle anything.
528 Hz works differently. It is not a reference pitch like A=440 but a single note from the so-called Solfeggio frequencies. When a converter says it retunes a song to 528 Hz, the usual meaning is that the C above middle C lands exactly on 528 Hz instead of 523.25 Hz, which is the same as tuning A to 444 Hz. That is what the 528 Hz option does here: a lift of about 16 cents, with the speed kept intact.
Get the best result
Start from the best copy you have. A WAV, FLAC, or 320 kbps MP3 converts cleanly, while a low bitrate file carries its artifacts into the new tuning. Export WAV if you plan to edit or master the result, and MP3 if it is going straight to your phone or a playlist. Retuning a track you produced yourself? Do it in your session before the final mixdown, so every instrument and effect is tuned at the source.
Before A=440 became the standard in the twentieth century, orchestras tuned anywhere from about 415 Hz to above 450 Hz, so there is nothing sacred about either number. Try both versions on good headphones and keep the one you enjoy.
432 Hz converter: common questions
Does converting to 432 Hz change the speed of the song?
Not by default. Keep original speed lowers the pitch, then time-stretches the audio back to its exact original length, so the tempo and BPM stay the same. Pick tape style if you want pitch and speed to drop together, which makes the song about 1.8 percent slower.
How do I know if a song is already in 432 Hz?
Assume 440 unless the artist says otherwise, since nearly all commercial music uses it. To check, play the song against a tuner app set to A=440: a track tuned to 432 Hz reads about a third of a semitone flat. Converting a song that is already at 432 would lower it a second time, so check first.
Is 432 Hz music scientifically proven to be better?
No. People who prefer it often describe it as warmer or calmer, and that preference is real, but claims about healing or special natural harmony are not backed by solid research. A small 2019 pilot study found slightly lower heart rates with 432 Hz music, which is interesting but far from proof. Convert because you like how it sounds.
What does the 528 Hz option do?
It retunes the song so the C above middle C lands on 528 Hz instead of 523.25 Hz. That is the same as tuning A to 444 Hz, a lift of about 16 cents. Like the 432 Hz option, it keeps the original speed unless you pick tape style.
Can I convert a 432 Hz song back to 440 Hz?
Yes. Pick Back to 440 Hz and the tool raises the pitch by the exact inverse ratio, 440 to 432. A song converted to 432 Hz and back returns to standard tuning.
Does converting to 432 Hz reduce the audio quality?
Barely. The pitch change is a clean resample and the speed correction is a stretch of only 1.8 percent, which stays transparent on almost any music. Export WAV to avoid adding a new round of MP3 compression, and start from the best copy of the song you have.
Can I convert a YouTube or Spotify song to 432 Hz?
Only if you already have the song as a file. This tool works on audio files on your device and does not pull audio from YouTube, Spotify, or other streaming services, whose terms generally do not allow downloading. Songs you bought, made, or recorded yourself work fine.
Is my music uploaded to a server?
No. The converter is FFmpeg compiled to WebAssembly, running inside your browser tab. Your file is processed on your own device and never leaves it, so we never see, store, or train on your music.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools run on the same idea: your audio stays on your device. If you're curious about the bigger thing, take a look.