WEIGHTCLASS

LBS.

KILOS

Flyweight:

125 lbs. & Below

56.81 kg & Below

Bantamweight

125.1 to 135 lbs.

56.82 kg - 61.36 kg

Featherweight

135.1 to 145 lbs.

61.37 kg - 65.90 kg

Lightweight

145.1 to 155 lbs.

65.91 kg - 70.45 kg

Welterweight

155.1 to 170 lbs.

70.45.1 kg - 77.27 kg

Middleweight

170.1 to 185 lbs.

77.28 kg - 84.09 kg

Light Heavyweight

185.1 to 205 lbs.

84.10 kg - 93.18 kg

Heavyweight

205.1 to 265 lbs.

93.19 kg - 120.45 kg

Super Heavyweight

265.1 lbs. & Above

120.46 kg & Above

CONVERTING LBS. TO KG. AND BACK
For those looking to convert lbs to kg. If you have a 65 kg fighter and want to know how many lbs. that is, multiply it by 2.2. So, 65 kg X 2.2 = 143 lbs. If you have a 145 lb fighter and want to know the weight in kg, divide it by 2.2. So 145 / 2.2 = 65.90 kg.