The Song Length Calculator turns tempo, number of measures and time signature into an exact running time: minutes and seconds, total seconds, milliseconds, and frames at 24, 25, 29.97, 30 and 60 fps. It also checks the length against common formats such as a 15- or 30-second spot, a radio edit and a typical single, and runs in reverse to tell you how many bars fit in a target length.

It is made for sync work, scoring to picture, and songwriters who need a section to land on a specific time.