Boxing Weight Classes Lbs. Over 145 to 155 lbs. Boxers in this category should not weigh more than 105 pounds or 47 63.
A fight can only happen inside the limits of the weightclass the lightest fighter. For example the 112 lb. For light welterweight the weight spread is 5 lbs.
4 to 8 oz.
4 to 8 oz. Separating boxers into divisions helps ensure fair fights. Over 125 to 135 lbs. Boxers in this category should not weigh more than 105 pounds or 47 63.