The deciliter (dL) is a metric unit of volume equal to one-tenth of a liter, used in medical lab reports and some European recipes. Blood test results in many countries express cholesterol and glucose levels in milligrams per deciliter, making this unit familiar to anyone reviewing health data. One deciliter equals exactly 100 milliliters or roughly 3.381 fluid ounces.

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.