Find your weight class for boxing, MMA, wrestling, and judo. Enter your weight to see matching divisions, closest weight classes, and estimated cut requirements.
Weight classes are the backbone of competitive fairness in combat sports. Every sanctioned fight—whether boxing, MMA, wrestling, or judo—requires fighters to compete within specific weight divisions. Our Combat Sports Weight Class Calculator instantly maps your current body weight to the appropriate divisions across multiple fighting disciplines, showing where you naturally fit and how far you might need to cut or gain to reach nearby weight classes.
Weight management is one of the most strategic aspects of combat sports. Even a few pounds can separate a natural fit from a grueling cut. This calculator helps fighters, coaches, and fans understand the weight class landscape across the most popular combat sports, enabling smarter decisions about which division offers the best competitive advantage while maintaining health and performance.
Choosing the right weight class is a strategic decision in combat sports. Cutting too much weight can affect performance, while competing too high can mean facing naturally larger opponents. This calculator maps your current weight to common divisions so you can compare options across sports without treating the output as medical advice.
Weight Class Match: Find the class where your weight ≤ class upper limit. Cut Required (lbs) = Current Weight − Class Limit. Cut % = (Cut Required ÷ Current Weight) × 100. A safe weight cut is generally considered to be under 5–8% of body weight in the weeks before competition, with 10%+ considered risky.
Result: Boxing: Super Middleweight (168 lbs) or Light Heavyweight (175 lbs); UFC: Middleweight (185 lbs); Wrestling: 86 kg (189.6 lbs); Judo: −90 kg (198.4 lbs)
At 185 lbs, you naturally fit the UFC Middleweight division exactly at the limit. In boxing, you would likely compete at Light Heavyweight (175 lbs) with a 10-lb cut, or Super Middleweight (168 lbs) with a 17-lb cut (9.2%). In freestyle wrestling, you fall just under 86 kg. Each sport has different class structures, so your competitive options vary across disciplines.
Choosing a weight class is one of the most consequential strategic decisions a combat athlete can make. Competing at the right weight means maximizing your size advantage after rehydration while minimizing the health risks and performance decrements of a large cut.
Weight cutting involves manipulating water intake, sodium loading, sweat sessions, and caloric restriction to temporarily reduce body weight for a weigh-in. Professional fighters typically begin their cut 1–2 weeks out, with the most aggressive water manipulation happening in the final 24–48 hours. After weigh-in, fighters rehydrate and can regain 10–20 lbs before stepping into the ring.
If you compete across multiple combat sport disciplines, understanding the different weight class structures is essential. A fighter who makes 170 lbs in UFC welterweight might find the closest wrestling class is 79 kg (174 lbs), requiring a slightly different preparation strategy. Judo and wrestling same-day weigh-ins demand more conservative cutting approaches than boxing or MMA.
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The calculator matches a given body weight to the nearest official division limits for each combat sport and estimates the cut or gain required to reach nearby classes. It is a worksheet for comparison and planning, not a recommendation to cut weight aggressively.
Most experts recommend cutting no more than 5–8% of body weight for competition. A 170-lb fighter might safely cut to 155–161 lbs. Cuts above 10% are risky and can cause dehydration, kidney stress, and impaired mental function. Always rehydrate properly after weigh-in.
Boxing has 17 weight classes ranging from Minimumweight (105 lbs) to Heavyweight (200+ lbs) with tight divisions. MMA/UFC uses 8 standard classes from Strawweight (115 lbs) to Heavyweight (265 lbs) with wider gaps between divisions. UFC also has fewer classes, meaning bigger jumps between weight classes.
It depends on your body composition. If you carry significant body fat, cutting to a lower class can give you a size advantage after rehydration. If you are already lean, fighting at a higher class may preserve more strength and endurance. Consider your natural frame, reach, and fighting style.
Wrestling uses kilogram-based weight categories and has 10 classes for freestyle. Weigh-ins are typically same-day, which limits how much weight fighters can safely cut compared to boxing or MMA, where weigh-ins are often 24+ hours before competition.
Judo has 7 weight categories for both men and women. Men's classes range from -60 kg to +100 kg, while women's range from -48 kg to +78 kg. Judo also has same-day weigh-ins, making extreme cuts dangerous.
Yes. Wrestling, judo, and boxing have separate weight class systems for men and women. MMA also has distinct women's divisions (Strawweight 115, Flyweight 125, Bantamweight 135, Featherweight 145). This calculator focuses on the most commonly used divisions across genders.
Walking-around weight is your normal, everyday body weight when you are not dieting or dehydrating for a fight. Most fighters walk around 10–20 lbs above their competition weight class, cutting the excess through water manipulation and diet in the days before weigh-in.