Por que a distinção importa
US cup and cubic inch 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 cup = 14.4375 in³ · 10 US cup = 144.375 in³.
14.4375 in³