The Monochord


Convert any ratio of two numbers to cents

The ratio can be simplified. Click the icon on the left to simplify ratio!

Ratio: a pair of positive integers, which is used to describe the relation between the frequencies of two sounds.
Those numbers can be applied to any frequency through multiplication to create certain musical intervals.
For example: 2:1 gives an octave, 3:2 is a perfect fifth and 4:3 is a perfect fourth.

Cents: a logarithmic unit of measure used for musical intervals.
An equal tempered semitone is divided into 100 parts, resulting in an octave containing 1200 cents.

Formula: ( frequency 1 / frequency 2 ) = ( 1200 2 ) cent