Helmholtz-Ellis JI Pitch Notation Tool

Andrew Kahler – June 1, 2025

More information here

♬

Ratio: ?

Cents: ?

Cents (Normalized): ?

Prime Factorization: ?

Tuning (12EDO, A440): ?

Hertz: ?

reference pitch class
♭F ♭C ♭G ♭D ♭A ♭E ♭B ♮F ♮C ♮G ♮D ♮A ♮E ♮B ♯F ♯C ♯G ♯D ♯A ♯E ♯B
reference pitch tuning

tonic pitch


offset pitch


Double Up Invert Set tonic to tonic × offset Reset
Convert


Pythagorean diatonic
P1 M2 M3 P4
P5 M6 M7 P8
commas/symbols
v e o m > < 4 5 9 0
; : / * 3 6 2 7 8 1
á à + - é è í ì