IAB
PRO & AMATEUR WEIGHT CLASSES
International Association of Boxing & International Amateur Boxing

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ADULT MEN & WOMEN

18 PRO & AMATEUR WEIGHT CLASSES

LOWER WEIGHTCLASS NAMES REVISED FEBRUARY 2019
- ALL WEIGHT SPREADS STAYED THE SAME -

WEIGHT CLASS

WEIGHT in lbs.

WEIGHT in kg.

MAXIMUM
WEIGHT SPREAD

(*ALLOWENCES)

GLOVE
SIZES
P= PRO, A=AMATEUR

AMATEUR
TOURNAMENT
GLOVE SIZES

STRAWWEIGHT

105 lbs. - & Below

47.7kg & Below

3 lbs. - 1.36 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

SUPER STRAWWEIGHT

105.1 - 108. lbs.

47.77kg - 49kg

3 lbs. - 1.36 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

FLYWEIGHT

108.1 - 112 lbs.

49.13 kg - 50.90 kg.

4 lbs. - 1.81 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

SUPER FLYWEIGHT

112.1 - 115 lbs.

50.95 kg - 52.27 kg.

5 lbs. - 2.27 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

BANTAMWEIGHT

115.1 lbs. - 118 lbs.

52.310 kg - 53.63 kg.

5 lbs. - 2.27 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

SUPER BANTAMWEIGHT

118.1 lbs. - 122 lbs.

53.68 kg - 55.45 kg.

5 lbs. - 2.27 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

FEATHERWEIGHT

122.1 lbs. - 126 lbs.

55.5 kg - 57.27 kg

5 lbs. - 2.27 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

SUPER FEATHERWEIGHT

126.1 lbs. - 130 lbs.

57.27 kg - 59.09 kg

5 lbs. - 2.27 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

LIGHTWEIGHT

130.1 lbs. - 135 lbs.

59.13 kg - 61.36 kg

5 lbs. - 2.27 kg. - (3 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

SUPER LIGHTWEIGHT

135.1 lbs. - 140 lbs.

61.40 kg - 63.63 kg

5 lbs. - 2.27 kg. - (5 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

WELTERWEIGHT

140.1 lbs. - 147 lbs.

63.68 kg - 66.81 kg

7 lbs. - 3.2 kg. - (5 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

SUPER WELTERWEIGHT

147.1 lbs. - 154 lbs.

66.86 kg - 70 kg

7 lbs. - 3.2 kg. - (5 Lbs)

P: 10 oz. - A: 10-12 oz.

10 oz.

MIDDLEWEIGHT

154.1 lbs. - 160 lbs.

70.1 kg - 72.72 kg

7 lbs. - 3.2 kg. - (5 Lbs)

P: 10 oz. - A: 10-12 oz.

10 oz.

SUPER MIDDLEWEIGHT

160.1 lbs. - 168 lbs.

72.77 kg - 76.36 kg

7 lbs. - 3.2 kg. - (5 Lbs)

P: 10 oz. - A: 10-12 oz.

10 oz.

LIGHT HEAVYWEIGHT

168.1 lbs - 175 lbs.

76.40 kg - 79.54 kg

7 lbs. - 3.2 kg. - (7 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

CRUISERWEIGHT

175.1 lbs - 200 lbs.

79.59 kg - 90.90 kg

25 lbs. - 11.36 kg. - (25 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

SUPER CRUISERWEIGHT

200.1 lbs. - 225 lbs.

90.95 kg - 102.27 kg

25 lbs. - 11.36 kg. - (25 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

HEAVYWEIGHT

225.1 lbs. and Above

102.31 kg & Above

No Limit

P: 10 oz. - A: 10-12 oz.

12 oz.

(*) ALLOWENCES: Weight allowed to lose in a 2 hour period.

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. 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 2.2 145 / 2.2 = 65.90 kg.

23 JUNIOR AMATEURS RULES WEIGHT CLASSES
BOYS & GIRLS WEIGHTCLASSES
(Ages 8 - 17)

JUNIOR FIGHTERS WEIGHT LOSS
JUNIOR FIGHTERS AGES 8-15
Cannot LOSE Weight To Make Weight!

WEIGHT CLASS

WEIGHT in lbs.

WEIGHT in kg.

MAXIMUM
WEIGHT SPREAD

(*ALLOWENCES)

GLOVE
SIZES
P= PRO, A=AMATEUR

AMATEUR
TOURNAMENT
GLOVE SIZES

Junior Strawweight

50. lbs. - 55 lbs.

22.72 Kg - 25 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Flyweight

55.1 lbs. - 60 lbs.

25.04 Kg - 27.27 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Bantamweight

60.1 lbs. - 65 lbs.

27.31 Kg - 29.54 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Featherweight

65.1 lbs. - 70 lbs.

29.59 Kg - 31.81 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Lightweight

70.1 lbs. - 75 lbs.

31.86 Kg - 34.09 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Welterweight

75.1 lbs. - 80 lbs.

34.13 Kg - 36.36 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Middleweight

80.1 lbs. - 85 lbs.

36.40 Kg - 38.63 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Light Heavyweight

85.1 lbs. - 90. lbs.

38.68 Kg - 40.90 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Cruiserweight

90.1 lbs. - 95 lbs.

40.95 Kg - 43.18 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Junior Heavyweight

95.1 lbs - 100 lbs.

43.22 Kg - 45.45 Kg

3 lbs. - 1.36 kg. - (2 Lbs)

10 oz.

10 oz.

Strawweight

100.1 lbs - 105 lbs.

45.5 kg & 47.72 kg

3 lbs. - 1.36 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Junior Flyweight

105.1 lbs. - 108. lbs.

47.77 kg - 49 kg.

3 lbs. - 1.36 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Flyweight

108.1 lbs. - 112 lbs.

49.13 kg - 50.90 kg.

4 lbs. - 1.81 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Junior Bantamweight

112.1 lbs. - 115 lbs.

50.95 kg - 52.27 kg.

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Bantamweight

115.1 lbs. - 118 lbs.

52.310 kg - 53.63 kg.

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Junior Featherweight

118.1 lbs. - 122 lbs.

53.68 kg - 55.45 kg.

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Featherweight

122.1 lbs. - 126 lbs.

55.5 kg - 57.27 kg

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Junior Lightweight

126.1 lbs. - 130 lbs.

57.27 kg - 59.09 kg

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Lightweight

130.1 lbs. - 135 lbs.

59.13 kg - 61.36 kg

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Junior Welterweight

135.1 lbs. - 140 lbs.

61.40 kg - 63.63 kg

5 lbs. - 2.27 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Welterweight

140.1 lbs. - 147 lbs.

63.68 kg - 66.81 kg

7 lbs. - 3.2 kg. - (2 Lbs)

P: 8 oz. - A: 10-12 oz.

10 oz.

Super Welterweight

147.1 lbs. - 154 lbs.

66.86 kg - 70 kg

7 lbs. - 3.2 kg. - (2 Lbs)

P: 10 oz. - A: 10-12 oz.

10 oz.

Middleweight

154.1 lbs. - 160 lbs.

70.1 kg - 72.72 kg

7 lbs. - 3.2 kg. - (2 Lbs)

P: 10 oz. - A: 10-12 oz.

10 oz.

Super Middleweight

160.1 lbs. - 168 lbs.

72.77 kg - 76.36 kg

7 lbs. - 3.2 kg. - (2 Lbs)

P: 10 oz. - A: 10-12 oz.

10 oz.

Light Heavyweight

168.1 lbs - 175 lbs.

76.40 kg - 79.54 kg

7 lbs. - 3.2 kg. - (2 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

Cruiserweight

175.1 lbs - 190 lbs.

79.59 kg - 86.36 kg

20 lbs. - 9.09 kg. - (2 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

Super Cruiserweight

190.1 lbs. - 210 lbs.

86.40 kg - 95.45 kg

15 lbs. - 6.81 kg. - (27 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

Heavyweight

210.1 lbs. - 230 lbs.

95.5 kg - 104.54 kg

20 lbs. 9.1 kg. - (2 Lbs)

P: 10 oz. - A: 10-12 oz.

12 oz.

Super Heavyweight

230.1 lbs. and Above

104.59 kg & Above

No Limit

P: 10 oz. - A: 10-12 oz.

12 oz.

(*) ALLOWENCES: Weight allowed to lose in a 2 hour period - 2 lbs.

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. 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 2.2 145 / 2.2 = 65.90 kg.

"CATCH WEIGHTS"
This is when say a Light Welterweight fighter at 140 lbs and a Welterweight at 144 lbs fight.
What you need to look at in this case is the most narrow weight spread, which is always in the lower weight class of the two.
For Light Welterweight, the weight spread is 5 lbs. where is as in the Welterweight class it's 7, it goes to a 5 lb. spread.
A fight can only happen inside the limits of the weightclass the lightest fighter. So for this example, (Light Welterweight at 140 lbs and a Welterweight at 144 ) this would be OK as a catch weight.
However if the Light Welterweight fighter was 138 and the Welterweight at 144, that's 6 lbs, and it wouldn't be allowed.

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