The UFC has nine weight classes for male fighters and four for female fighters. The weight classes for men, in ascending order, are:

• Strawweight (115 lb, 52.2 kg)
• Flyweight (125 lb, 56.7 kg)
• Bantamweight (135 lb, 61.2 kg)
• Featherweight (145 lb, 65.8 kg)
• Lightweight (155 lb, 70.3 kg)
• Welterweight (170 lb, 77.1 kg)
• Middleweight (185 lb, 83.9 kg)
• Light Heavyweight (205 lb, 93.0 kg)
• Heavyweight (265 lb, 120.2 kg)

The women’s weight classes are:

• Strawweight (115 lb, 52.2 kg)
• Flyweight (125 lb, 56.7 kg)
• Bantamweight (135 lb, 61.2 kg)
• Featherweight (145 lb, 65.8 kg)

The weight classes are important in organizing fights and maintaining a competitive balance within the sport. To compete within a specific weight class, fighters must weigh in at or below the designated limit.