In January 2015, the World Boxing Council, World Boxing Association and the International Boxing Federation reached an agreement to standardize the names of professional boxing’s then 17 weight divisions. (The World Boxing Organization has yet to adopt these standard class names.)
The currently-recognized weights for professional male boxers, listed in maximum allowable weight for each division/class/category, as defined by these four major sanctioning bodies, are:
Out of the 17 alphabetical weight classes across boxing, amateur boxing accommodates 11 different classes that encompass very specific weight requirements for participants.
Weight classes between male and female amateur boxing are largely similar, with the exception of the pinweight and heavyweight. A weigh in has to take place before every bout, in order to ensure that he or she is qualified to compete in that particular weight class.
minimumweight, 105 pounds
light flyweight, 108 pounds
flyweight, 112 pounds
super flyweight, 115 pounds
bantamweight, 118 pounds
super bantamweight, 122 pounds
featherweight, 126 pounds
super featherweight, 130 pounds
lightweight, 135 pounds
super lightweight, 140 pounds
welterweight, 147 pounds
super welterweight, 154 pounds
middleweight, 160 pounds
super middleweight, 168 pounds
light heavyweight, 175 pounds
cruiserweight, 200 pounds
heavyweight, unlimited