Comparison
432 Hz vs 440 Hz
Two reference pitches, one small but real difference. Here is how they compare, why 440 Hz became the default, and how to figure out which one you actually prefer.
432 Hz and 440 Hz are two ways of answering the same question: what pitch should the note A above middle C sit at? 440 Hz is the worldwide standard. 432 Hz is a slightly lower alternative. Everything else, every other note, follows from that one anchor.
440 Hz is the standard for coordination. 432 Hz is about 1.8% lower and is often described as warmer. Neither is objectively "correct" or "healthier" - it is preference. The best move is to hear both on your own music and decide.
The difference at a glance
If you are short on time, this table covers it:
- Pitch of A4: 440 Hz (standard) vs 432 Hz (about 8 Hz lower).
- Size of the gap: roughly 32 cents, about 1.8%, under a third of a semitone.
- Status: 440 Hz is the global standard since 1955. 432 Hz is an alternative tuning.
- Often described as: 440 Hz brighter and sharper, 432 Hz warmer and softer.
- Best for: 440 Hz for playing in tune with other recordings and instruments. 432 Hz for relaxed personal listening, if you like the feel.
Why 440 Hz is the standard
For centuries there was no single tuning. Concert pitch drifted between regions and eras. As recording, broadcast and international touring grew, that became a real problem, so 440 Hz was promoted as a common anchor and formalised by international agreement in 1955. The point was practical: one number everyone could share. It was never a claim that 440 Hz is the most pleasant pitch.
What 432 Hz sounds like
Because the shift is small, a snap A/B test often leaves people unsure. The difference tends to reveal itself over time. Switch a familiar album to 432 Hz for a while and many listeners report it feels a little gentler and less edgy. Switch back to 440 Hz and the brightness can briefly feel sharp before your ear resettles.
Crucially, this only holds if the retuning is done properly. Shifting pitch by changing playback speed also changes tempo and adds a thin, metallic quality. Real retuning resamples the audio so the song plays at the right speed and simply sits on a lower reference. That is the difference between "sounds off" and "sounds warm."
Compare them on your own tracks
Attune plays your library and lets you flip between 432 Hz and standard tuning in real time, with a studio-grade engine. Free, ad-free, no account.
Is 432 Hz better than 440 Hz?
Not in any measurable, universal sense. The claims that 432 Hz is "in tune with nature" or carries health benefits are not supported by strong evidence, and we go through that carefully in what the evidence says about 432 Hz. What is true is that plenty of people genuinely enjoy the lower reference. Preference is reason enough.
How to decide which you prefer
- Pick two or three songs you know inside out.
- Listen on decent headphones, where small differences are clearest.
- Play each track at 432 Hz for a full listen, not just a few seconds, then switch back.
- Notice how it feels over time, not just on the first chord.
For the practical setup on your phone, see how to play your music in 432 Hz on Android. And if you have ever searched for a "432 Hz converter," read converting music to 432 Hz first - there is a better way than permanently changing your files.