Equal tempered tuning may use any value for the standard interval. Dividing the octave into multiples of 12 units (12edo) is the most widely used system and dividing this further into 24edo, 48edo, 72edo and 96edo are in current use by some composers. Equal temperaments may also be named as cents per division (cET) Eg 88cET.

Many equal temperament tunings can viewed and mapped in a similar way to LucyTuning, using Large and small intervals, as shown below:

Wendy Carlos has experimented with and published information on three equal tunings