区別が重要な理由
cubic inch and US liquid gallon 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.
例
1 in³ = 0.004329004329 US gal · 10 in³ = 0.04329004329 US gal.
0.004329004329 US gal