What weight class am I? Boxing and MMA weight class finder

Each class runs from just over the limit of the class below it up to and including its own limit — Nevada’s regulation and the ABC’s MMA rules both write classes as “over X to Y”. So a weight exactly on a limit is in the lighter class, and the heaviest class has no upper limit at all.

The limits are set in pounds. The kilogram figures use NIST’s exact factor and are rounded to the nearest gram — the three decimals the WBC prints — and a weight typed in kilograms is compared at the same precision, so a weight equal to a limit as shown is inside the class. The WBC’s own figures match these except at cruiserweight, where it prints 90.719 kg for 200 lb; the exact figure is 90.718474 kg.

Two of the tables come from regulators and two from sanctioning bodies. The Association of Boxing Commissions’ Unified Rules of Boxing do not include a weight table, so for boxing the finder shows a state commission’s schedule — Nevada’s — alongside the WBC’s and IBF’s own lists.

From 105 to 175 lb the three boxing tables share the same limits, though the IBF calls several of them “junior” classes where the WBC says “light” or “super”, and the IBF adds a 102 lb class below the others. Above 175 lb they part company:

MMA’s classes are a different ladder altogether: under the ABC’s rules, cruiserweight runs to 225 lb and heavyweight to 265 lb.

A weight of 150 lb is 68.039 kg. The four tables give it three different names:

Nevada and the WBC agree on the name and the limit; the IBF has the same limit under a different name; and in MMA the same weight sits 5.0 lb inside lightweight.

• Weight cutting or health. The tables are rule-book limits; nothing here is advice on making weight.
• Every organisation. Other sanctioning bodies, such as the WBA and WBO, publish their own lists, and promotions can contract bouts at catch weights between the classes.
• Women’s divisions. The WBC lists its women’s divisions separately; the boxing tables here are its men’s list, Nevada’s schedule and the IBF’s list as published.
• Changes after 2 October 2026, the day these tables were checked against their sources.

The guide to MMA weight classes explains why the bands are uneven and how catch weights and missed weight are handled, and how fight cards are built covers how weight, rankings and styles shape a card.