Weight Class Calculator
Competing in the correct weight class is fundamental to fair competition in strength sports. Both the International Powerlifting Federation (IPF) and the International Weightlifting Federation (IWF) use fixed weight classes that determine which group you compete against. This calculator shows which class you currently fall into for both sports, how far you are from the class limit, and whether moving up or down a class might be worth considering based on the competitive landscape. Enter your body weight in kilograms and select your sex to see your weight class assignments for powerlifting and weightlifting.
Weight class boundaries
IPF Male: 59, 66, 74, 83, 93, 105, 120, 120+ kg
IPF Female: 47, 52, 57, 63, 69, 76, 84, 84+ kg
IWF Male: 55, 61, 67, 73, 81, 89, 96, 102, 109, 109+ kg
IWF Female: 45, 49, 55, 59, 64, 71, 76, 81, 87, 87+ kg
Frequently asked questions
What are the IPF powerlifting weight classes?
The IPF (International Powerlifting Federation) weight classes for men are: 59 kg, 66 kg, 74 kg, 83 kg, 93 kg, 105 kg, 120 kg, and 120+ kg. For women: 47 kg, 52 kg, 57 kg, 63 kg, 69 kg, 76 kg, 84 kg, and 84+ kg. These were updated in 2020.
What are the IWF weightlifting weight classes?
The IWF (International Weightlifting Federation) weight classes for men (2018 onwards) are: 55 kg, 61 kg, 67 kg, 73 kg, 81 kg, 89 kg, 96 kg, 102 kg, 109 kg, and 109+ kg. For women: 45 kg, 49 kg, 55 kg, 59 kg, 64 kg, 71 kg, 76 kg, 81 kg, 87 kg, and 87+ kg.
Should I cut weight for competition?
Weight cutting (short-term dehydration to make a lower weight class) is common but carries health risks. The safest approach is to compete at or near your natural body weight. If you do cut, cut should be less than 5% of body weight and rehydrate fully before competing.
How many kilograms should I be above my weight class limit?
Most experienced lifters compete 1 to 3 kg above their weight class limit at peak condition, allowing a small buffer. Very little water cutting (less than 2%) is generally safe and easy to reverse within the 2-hour weigh-in window used by most federations.
Which weight class should I target?
Target the weight class closest to your natural body weight. Competing in the lowest class you can make comfortably will give you the best strength-to-weight ratio advantage, but excessively cutting weight depletes performance. Prioritise competing at a healthy, sustainable weight.
Official sources
- International Powerlifting Federation: IPF Technical Rules (Weight Classes).
- International Weightlifting Federation: IWF Technical and Competition Rules.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.