# 25/24

**25/24**
|-3 -1 2>

70.6724 cents

The **5-limit chromatic semitone** (short: **chroma**), 25/24, 70.672 cents, is the superparticular ratio which marks the difference between the 5-limit thirds, 6/5 and 5/4, and sixths, 8/5 and 5/3. It is therefore the amount which sharpens or flattens a 5-limit third or sixth, and when notating 5-limit just intonation it can be associated with the sharp or flat symbol, and along with an additional symbol for the 81/80 comma, it can be used for a complete system of 5-limit notation.

See also:

- Chroma -- a generalising concept for MOS scales
- Gallery of Just Intervals
- comma