01
What the numbers mean
In a 440Hz system, the note A4 is assigned a frequency of 440 cycles per second. In a 432Hz system, A4 is assigned 432 cycles per second. Other equal-tempered targets are calculated at the same musical intervals from that reference.
The difference is about 31.8 cents, so a handpan tuned around 432Hz will read noticeably flat when a tuner is set to 440Hz. Always confirm the intended reference before judging a note.
A4 = 440Hz
A common contemporary reference that is convenient when playing with many modern instruments and recordings.
A4 = 432Hz
A lower alternative reference used by some instruments and ensembles. All target notes move with it.
02
Choose for musical compatibility
Use the reference that matches the instrument and the musicians you plan to play with. If the handpan was built for 440Hz, switching a tuner to 432Hz does not retune the steel; it only changes the comparison targets shown on screen.
Solo players may choose according to their instrument and preference. Ensemble players should agree on a reference so the instruments relate predictably.
03
Avoid unsupported health claims
A pitch reference is a musical tuning choice. Claims that 432Hz alone treats illness, changes cells or guarantees a special healing effect are not established by the reference frequency itself.
HandpanTune presents both settings as measurement references. The appropriate choice depends on instrument compatibility, performance context and personal preference.
Try a measured check
Open the handpan tuner
Play one note at a time and wait for a stable reading.