Por que a distinção importa
US liquid pint and Imperial quart 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.
Exemplo
1 US pt = 0.416337092314 imp qt · 10 US pt = 4.16337092314 imp qt.
0.416337092314 imp qt