Почему различие важно
US cup and cubic foot 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.
Пример
1 US cup = 0.00835503472222 ft³ · 10 US cup = 0.0835503472222 ft³.
0.00835503472222 ft³