Why does splenda have no calories?

Splenda, which contains the artificial sweetener sucralose, has no calories because it is not metabolized by the body. Sucralose is derived from sugar but is chemically altered to prevent absorption, meaning it passes through the digestive system without contributing to caloric intake. This allows it to provide sweetness without the calories associated with regular sugar. As a result, it is often used as a sugar substitute in various food and beverage products.