Four grams is a unit of mass in the metric system, commonly used to measure small quantities of substances. It is equivalent to 0.004 kilograms or about 0.141 ounces. This measurement is often used in cooking, science, and medicine to ensure precise amounts of ingredients or materials. In everyday terms, four grams is roughly the weight of a small paperclip or a teaspoon of sugar. Understanding grams is essential for tasks like baking, where accurate measurements can affect the outcome of a recipe, or in pharmaceuticals, where precise dosages are critical for safety and effectiveness.