Martial Arts Weight Class Calculator
Find your weight class for boxing, MMA, wrestling, judo, and BJJ.
Enter your weight and see which division you fall into.
Your Weight Class
How weight classes work in combat sports:
Weight classes exist to create fair competition. Each organization has its own divisions and limits. The weight you must hit is measured at weigh-in — typically 24 hours before the fight (MMA/boxing) or the morning of the event (wrestling/judo).
UFC / Professional MMA Weight Classes:
| Division | Upper Limit |
|---|---|
| Strawweight | 115 lbs (52.2 kg) |
| Flyweight | 125 lbs (56.7 kg) |
| Bantamweight | 135 lbs (61.2 kg) |
| Featherweight | 145 lbs (65.8 kg) |
| Lightweight | 155 lbs (70.3 kg) |
| Welterweight | 170 lbs (77.1 kg) |
| Middleweight | 185 lbs (83.9 kg) |
| Light Heavyweight | 205 lbs (93.0 kg) |
| Heavyweight | 265 lbs (120.2 kg) |
Professional Boxing Weight Classes:
| Division | Upper Limit |
|---|---|
| Minimumweight | 105 lbs (47.6 kg) |
| Light Flyweight | 108 lbs (49.0 kg) |
| Flyweight | 112 lbs (50.8 kg) |
| Bantamweight | 118 lbs (53.5 kg) |
| Featherweight | 126 lbs (57.2 kg) |
| Lightweight | 135 lbs (61.2 kg) |
| Welterweight | 147 lbs (66.7 kg) |
| Middleweight | 160 lbs (72.6 kg) |
| Light Heavyweight | 175 lbs (79.4 kg) |
| Heavyweight | 200 lbs (90.7 kg) |
| Super Heavyweight | No limit |
Weight cutting reality:
Most fighters compete 10–15 lbs below their walking-around weight. A fighter who walks at 175 lbs may compete at welterweight (170 lbs) or even lightweight (155 lbs).
Safe weight cut guidelines:
- Lose no more than 5–8% of bodyweight through water manipulation
- Rehydrate fully before competing — performance drops sharply above 3% dehydration
- Chronic large weight cuts increase concussion risk and kidney damage