28/25

Interval information

Ratio	28/25
Factorization	22 × 5-2 × 7
Monzo	[2 0 -2 1⟩
Size in cents	196.1985¢
Names	(septimal) middle major second, (septimal) middle whole tone
Color name	zgg3, zogugu 3rd
FJS name	[math]\displaystyle{ \text{d3}^{7}_{5,5} }[/math]
Special properties	reduced
Tenney height (log2 nd)	9.45121
Weil height (log2 max(n, d))	9.61471
Wilson height (sopfr(nd))	21
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28/25, the (septimal) middle whole tone, is the interval between 5/4 and 7/5, and is intermediate in size between 10/9, of which it is 126/125 sharp, and 9/8, of which it is 225/224 flat. It's actually the mediant of 19/17 and 9/8. A meantone where the tone is tuned to be exactly 28/25 has a fifth of size 2√14/5, or 698.099 ¢.

See also

• 25/14 – its octave complement
• 25/21 – its fourth complement
• 29/26 – a co-mediant interval
• Gallery of just intervals
• 25-odd-limit