Free 432 Hz Converter

Retune a 440 Hz track to the 432 Hz standard.

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What is this tool

AudioToolKit converts audio from 440 Hz to 432 Hz online for free, in your browser. It applies the exact -0.32 semitone pitch shift with a time-stretch that keeps the tempo unchanged, landing the A4 note on 432 Hz. The retuned track downloads as MP3 or WAV, and the file is processed entirely on your device — no upload, no install, no account.

Drag and drop your file here

MP3, WAV, M4A, AAC, OGG, FLAC, AIFF, AIF, OPUS, WMA, AMR — up to 25 MB per file

Output format

Çıktı

432 Hz-tuned MP3 or WAV

Kabul edilen formatlar

.mp3, .wav, .m4a, .aac, .ogg, .flac, .aiff, .aif, .opus, .wma, .amr

Neden bu ücretsiz aracı kullanmalısınız

432 Hz is the alternative tuning many listeners prefer, described as warmer and easier on the ears. Converting means shifting the pitch by -0.32 semitones — inaudibly small, but exactly the interval between the two standards.

Ücretsiz 432 hz converter nasıl çalışır?

1
Upload the 440 Hz track.
2
Press Process — the -0.32 semitone shift is applied automatically.
3
Download the retuned file.

Sıkça sorulan sorular

Why -0.32 semitones?

432/440 in log2 is -0.3177 semitones. Rounding to -0.32 lands the A4 note on 432 Hz.

Does the tempo change?

No, the shift is time-stretch compensated.

Local processing?

Yes, in your browser.

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