Weight conversion is the process of changing a measurement of weight from one unit to another. Common units of weight include pounds, kilograms, and ounces. For example, to convert pounds to kilograms, you can multiply the number of pounds by 0.453592. This helps people understand and compare weights in different systems. Different countries use different units for weight. In the United States, pounds and ounces are commonly used, while many other countries use the metric system, which includes kilograms and grams. Knowing how to convert between these units is useful for cooking, travel, and science.