Here is the list of weight divisions in boxing. Some boxing organizations differ in the name of the weight divisions. I included their counterpart name.
Abbreviations used
lbs = pounds
kg = kilogram
Boxing Weight Divisions:
105lbs, 47.62kg = Straw-weight, also known as Mini Flyweight and Minimum-weight
108lbs, 48.99kg = Light Flyweight, also known as Junior Flyweight
112lbs, 50.8kg = Flyweight
115lbs, 52.16kg = Super Flyweight, also known as Junior Bantamweight
118lbs, 53.52kg = Bantamweight
122lbs, 55.34kg = Super Bantamweight, also known as Junior Featherweight
126lbs, 57.15kg = Featherweight
130lbs, 58.97kg = Super Featherweight, also known as Junior Lightweight
135lbs, 61.23kg = Lightweight
140lbs, 63.5kg = Light Welterweight, also known as Junior Welterweight and Super Lightweight
147lbs, 66.68kg = Welterweight
154lbs, 69.85kg = Light Middleweight, also known as Junior Middleweight and Super Welterweight
160lbs, 72.57kg = Middleweight
168lbs, 76.2kg = Super Middleweight
175lbs, 79.38kg = Light Heavyweight
200lbs, 90.72kg = Cruiserweight
over 200lbs, 91kg = Heavyweight
Sources:
http://en.wikipedia.org/wiki/Championship_belt
http://en.wikipedia.org/wiki/Boxing_weight_classes
http://www.talkboxing.co.uk/guides/boxing_weight_divisions.html
http://www.ringofdreams.com/articles/boxingweightclasses.shtml
Abbreviations used
lbs = pounds
kg = kilogram
Boxing Weight Divisions:
105lbs, 47.62kg = Straw-weight, also known as Mini Flyweight and Minimum-weight
108lbs, 48.99kg = Light Flyweight, also known as Junior Flyweight
112lbs, 50.8kg = Flyweight
115lbs, 52.16kg = Super Flyweight, also known as Junior Bantamweight
118lbs, 53.52kg = Bantamweight
122lbs, 55.34kg = Super Bantamweight, also known as Junior Featherweight
126lbs, 57.15kg = Featherweight
130lbs, 58.97kg = Super Featherweight, also known as Junior Lightweight
135lbs, 61.23kg = Lightweight
140lbs, 63.5kg = Light Welterweight, also known as Junior Welterweight and Super Lightweight
147lbs, 66.68kg = Welterweight
154lbs, 69.85kg = Light Middleweight, also known as Junior Middleweight and Super Welterweight
160lbs, 72.57kg = Middleweight
168lbs, 76.2kg = Super Middleweight
175lbs, 79.38kg = Light Heavyweight
200lbs, 90.72kg = Cruiserweight
over 200lbs, 91kg = Heavyweight
Sources:
http://en.wikipedia.org/wiki/Championship_belt
http://en.wikipedia.org/wiki/Boxing_weight_classes
http://www.talkboxing.co.uk/guides/boxing_weight_divisions.html
http://www.ringofdreams.com/articles/boxingweightclasses.shtml