Accidentals for 12-EDO

The following table shows the accidentals for the 12-tone equal-temperament system (12-EDO, traditional western tone system).

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_
_
xStepxAlter.xCentsxstdxsagxmsag
000
+1+1/2+100
−1−1/2−100
+2+1+200
−2−1−200
std — Standard notation

Standard sharp / flat symbols.

sag — Sagittal notation

Sagittal (“arrow-like”) symbols after George D. Secor and David C. Keenan, sagittal.org. sag is the "Pure Sagittal notation" in contrast to msag. It uses one distinct symbol for each alteration up to the whole tone. For higher alterations, two symbols are combined.

msag — Mixed Sagittal notation

Standard sharp / flat symbols using the large double-sharp symbol. This is actually not a Sagittal notation.