Why the distinction matters
US liquid quart and cubic metre 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 US qt = 0.000946352946 m³ · 10 US qt = 0.00946352946 m³.
0.000946352946 m³