The US gallon (gal) is an imperial volume unit equal to exactly 3.7854 liters, the standard measurement for fuel, milk, and paint in the United States. Gasoline prices at American pumps are always quoted per gallon, and US vehicle fuel efficiency is measured in miles per gallon. One US gallon equals 4 US quarts or 8 US pints.

The tablespoon (tbsp) is a volume unit equal to 3 teaspoons or approximately 14.787 milliliters, primarily used in cooking recipes and nutritional labels. In the kitchen, one tablespoon of butter, oil, or sugar provides a consistent measure regardless of the spoon's physical size. One US tablespoon equals exactly 0.5 US fluid ounces.