Why doesn't ConvertIt recognize measurements like "2 5/8 feet" when it recognizes "4/5 foot"?
Answer: It was complicated to do it, so we didn't! We might be able to add this in the future. There is a work-around: for the time being, you can manually convert fractions like "2 5/8" into ones of the form X/Y, which ConvertIt will then recognize. For example, to convert "2 5/8" to a fraction of the form X/Y, multiply 2 times 8, then add 5 to get 21, then place that over 8, as in 21/8.
Explanation: We wanted to allow measurements whose names began with numerals, and it was hard to distinguish those fractions from the names of those measurements.