Men's competition
Flyweight
- –52 kg (1971–1991)
- –54 kg (1995)
Bantamweight
- –56 kg (1951–1967)
- 52–56 kg (1971–1991)
- 54–59 kg (1995)
- –56 kg (1999–2015)
- –61 kg (2019–)
Featherweight
- 56–60 kg (1951–1991)
- 59–64 kg (1995)
- 56–62 kg (1999–2015)
- 61–67 kg (2019–)
Lightweight
- 60–67.5 kg (1951–1991)
- 64–70 kg (1995)
- 62–69 kg (1999–2015)
- 67–73 kg (2019–)
Middleweight
- 67.5–75 kg (1951–1991)
- 70–76 kg (1995)
- 69–77 kg (1999–2015)
- 73–81 kg (2019)
Light-heavyweight
- 75–82.5 kg (1951–1991)
- 76–83 kg (1995)
- 77–85 kg (1999–2015)
Middle-heavyweight
- 82.5 kg–90 kg (1955–1991)
- 83–91 kg (1995)
- 85–94 kg (1999–2015)
- 81–96 kg (2019–)
First-heavyweight
- 90–100 kg (1979–1991)
- 91–99 kg (1995)
Heavyweight
- +90 kg (1951–1967)
- 90–110 kg (1971–1975)
- 100–110 kg (1979–1991)
- 99–108 kg (1995)
- 94–105 kg (1999–2015)
- 96–109 kg (2019–)
Super heavyweight
- +110 kg (1971–1991)
- +108 kg (1995)
- +105 kg (1999–2015)
- +109 kg (2019–)
