Why the distinction matters
US teaspoon and Imperial quart 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 tsp = 0.00433684471161 imp qt · 10 US tsp = 0.0433684471161 imp qt.
0.00433684471161 imp qt