Por que a distinção importa
US fluid ounce 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 fl oz = 1.8046875 in³ · 10 US fl oz = 18.046875 in³.
1.8046875 in³