Other representations

Package: CONVERTERS_PACKAGE. Registered by createEngine(); for a slimmer engine, register it explicitly (see choosing packages).

Some conversions do not change the unit, they change how a value is written: the same number shown as a percentage, or as an exact fraction. The as form is how you ask for one of these representations.

The as form is a general mechanism rather than a fixed list, and packages can add their own targets.

0.5 as % // 50.00%
0.75 as fraction // 3/4

as fraction is exact for a value that was written as a fraction: the result is reduced to lowest terms rather than approximated, so a computed fraction reads back as itself. See fractions.

10/4 as fraction // 5/2
(1/3 + 1/7) as fraction // 10/21