How IBJJF weigh-ins actually work
Three rules produce most of the horror stories. First, you weigh in wearing your competition uniform: the gi for gi divisions (typically 3 to 4.5 lb of fabric), the no-gi kit for no-gi. Second, there is no allowance: the division limit is exact, and over by an ounce is over. Third, it happens once, right before your first match: no second attempt, no day-of division change, no refund. The weigh-in is not a separate event the day before, the way wrestling and MMA run it; you walk from the scale into the bracket. Which is why the calculator above adds the gi for you, and why the margin line matters more than the division name.
The full tables, adult and masters
The IBJJF publishes limits in kilograms; the pound figures below are exact conversions, and printed event charts sometimes round slightly differently. The kg number governs. Masters divisions use the same tables; only the age brackets differ.
Picking a division like an adult
- Register for the division you already are. Weigh yourself in your competition gi at your normal evening weight, then pick the division that number fits inside with a couple of pounds to spare. Registering for the division you plan to become is how DQ stories start.
- Do not cut for your first competition. The community is nearly unanimous on this. IBJJF-style same-day weigh-ins leave no rehydration window, so anything lost in the sauna is missing from your cardio when the bracket starts. First events are for learning to compete, not to cut (the full case is in the first competition guide).
- If you are within 2 lb of a limit, decide early. Either commit to managing it seriously for the final week, or move up a division and forget the scale entirely. The worst plan is hoping. Grapplers one division up are not meaningfully bigger; the same cannot be said for the stress of a razor-thin weigh-in.
- The open class exists. Most IBJJF events run an absolute (open weight) division you can enter alongside your weight class, medal-gated at some events. It is optional, famous for producing David-and-Goliath matches, and nothing a first-timer needs.
Where the divisions meet the rest of your prep
Weight is one of three registration decisions; belt and age brackets are the others, and your belt decides your ruleset and match length too. The first competition guide walks the whole day, from registration to the adrenaline dump in match one. If a new gi is part of the plan, size it with the gi size calculator and remember competition gis face uniform checks at bigger events. And if you are still deciding whether to compete at all, the improvement guide makes the case that one tournament teaches what months of classes cannot.
Frequently asked questions
Do you weigh in with the gi on at IBJJF tournaments?
Yes. IBJJF weigh-ins happen in your competition uniform: the gi for gi divisions, the no-gi uniform for no-gi divisions. A typical adult gi adds roughly 3 to 4.5 pounds depending on weave and size, so the number that matters is your weight in the kit you will compete in, not your morning weight.
Is there a weight allowance at IBJJF events?
No. The division limit is the limit, there is one opportunity on the scale, and it happens right before your first match. Over by any amount means disqualification with no refund and no same-day division change. This is why experienced competitors register with margin instead of optimism.
What happens if I miss weight?
Disqualification, full stop: no second weigh-in, no bumping to the next division on the day, no refund. If you realize before the event that you registered too light, most events let you change divisions up to a published deadline; day-of, nothing can be done.
Do masters divisions have different weight limits?
No. Adult and masters divisions share the same weight tables; masters brackets differ by age, not by scale. Juvenile (16 to 17) and kids divisions run their own lighter tables, published on each event page.
How much does a gi weigh?
Most adult competition gis land between 3 and 4.5 pounds (roughly 1.4 to 2 kg) including the belt, with lightweight competition weaves at the bottom of that range and heavier pearl weaves above it. If you are close to a limit, weigh yourself in your actual competition gi rather than trusting an average.
Should I cut weight for my first BJJ competition?
The near-universal community answer: no. Compete at the division your normal training weight puts you in. Water cutting is a skill sport of its own with real downsides, IBJJF weigh-ins happen minutes before your first match with no rehydration window, and your first event has enough variables already. Cut later, if ever, once competing itself is familiar.
Sources
- IBJJF Weigh-In Procedures: International Brazilian Jiu-Jitsu Federation. Official weigh-in rules: one weight check, in competition uniform, before the first match, with no day-of changes or refunds. Verified live 2026-09-04.
- IBJJF Rule Book: International Brazilian Jiu-Jitsu Federation. Competition rules, divisions, and scoring.
- Division limits compiled from IBJJF adult/masters weight charts as published for current events; individual events can vary, so always confirm against the weight chart linked from your event page.
- Typical gi weights reflect manufacturer specifications across common competition weaves; weigh your own kit if you are near a limit.
Hard requirements (minimum ages, minimum time at each belt) cite the IBJJF's published graduation system. Typical timelines describe common patterns across academies and are labeled as such; your academy's standards are set by your instructor, not a federation.
