Why the distinction matters
Imperial gallon and US liquid pint belong to measurement conventions that may look familiar but are not always equivalent across countries. Mendeleev.com therefore keeps the system name next to the abbreviation and calculates from defined conversion factors rather than rounded kitchen rules.
Example
1 imp gal = 9.60759940404 US pt · 10 imp gal = 96.0759940404 US pt.
9.60759940404 US pt