In boxing, a weight class is a measurement weight range for boxers. The lower limit of a weight class is equal to the upper weight limit of the class below it. The top class, with no … See more

A boxer who is over the weight limit may strip naked to make the weight if the excess is minimal; otherwise, in a professional bout, one can try again later, typically after losing … See more

A boxer may fight different bouts at different weight classes. The trend for professionals is to move up to a higher class as they age, with muscle mass and bone density increasing over time. Winning titles at multiple weight classes to become a "multiple … See more

In the early nineteenth century, there were no standard weight classes. In 1823, the Dictionary of the Vulgar Tongue said the limit for a "light weight" was 12 stone (168 lb, 76.2 kg) while Sportsman's Slang the same year gave 11 stone (154 lb, 69.9 kg) as the limit. See more

A nonstandard weight limit is called a catchweight. A catchweight may be agreed to for an individual bout—sometimes even for a championship bout—but championships are awarded only at the standard weight classes. For example, when See more

This table gives names and limits recognised by the four widely regarded sanctioning bodies (World Boxing Association (WBA), World Boxing Council (WBC), International Boxing Federation (IBF), and World Boxing Organization (WBO)); the label … See more

When the (amateur) International Boxing Association (AIBA) was founded in 1946 to govern amateur boxing, it metricated the weight class limits by rounding them to the nearest kilogram. Subsequent alterations as outlined in the boxing at the Summer Olympics article; … See more