UFCの階級を知る

A detail view of the scale reading 155.5 pounds after Charles Oliveira of Brazil failed to make weight, vacating the UFC lightweight championship

規定体重と許容範囲

2023.01.17

総合格闘技（MMA）の世界では、アスリートたちは体重別の階級で戦う。試合日の前日に行われるUFCの公式計量で、アスリートたちは体重を特定の重量、もしくはその周辺に収めなければならない。

現在、UFCには12の階級があり、そのすべてでファイターたちには制限以下に体重を収めることが求められる。一般的に、ファイターたちは要求される重量をクリアしつつ減量を最小限にすべく、正確なリミット通りの体重を目指す。

規定の体重に収められなかった場合、アスリートは一定の割合のファイトマネーを対戦相手に渡すか、相手との合意に基づいて特定の階級にあてはまらない試合として戦うか（キャッチウェイト）、試合そのものがキャンセルになるかだ。

Alex Pereira of Brazil poses on the scale during the UFC 307 official weigh-in at the Hilton Salt Lake City Center on October 04, 2024 in Salt Lake City, Utah. (Photo by Jeff Bottari/Zuffa LLC)

Alex Pereira poses on the scale during the UFC 307 official weigh-in at the Hilton Salt Lake City Center on October 04, 2024 in Salt Lake City, Utah. (Photo by Jeff Bottari/Zuffa LLC)

UFC Weight Classes

Strawweight – 115 pounds

For non-title bouts, women’s strawweight athletes can weigh in up to 116 pounds, while title fights require athletes to weigh in at or under 115 pounds.

Current Champion: Mackenzie Dern

Flyweight – 125 pounds

For non-title bouts, flyweight athletes can weigh in up to 126 pounds, while title fights require athletes to weigh in at or under 125 pounds.

In 2020, Deiveson Figueiredo was scheduled to face Joseph Benavidez for the flyweight title. At the official weigh-ins, Figueiredo came in at 127.5 pounds, 2.5 pounds over the championship limit. The bout proceeded as scheduled, but because of the weight miss, only Benavidez was eligible to win the title. Figueiredo ultimately won the fight, leaving the championship vacant.

Current Champion (Women's): Valentina Shevchenko

Current Champion (Men's): Joshua Van

Bantamweight – 135 pounds

For non-title bouts, bantamweight athletes can weigh in up to 136 pounds, while title fights require athletes to weigh in at or under 135 pounds.

Current Champion (Women's): Kayla Harrison

Current Champion (Men's): Petr Yan

Featherweight – 145 pounds

For non-title bouts, featherweight athletes can weigh in up to 146 pounds, while title fights require athletes to weigh in at or under 145 pounds.

Current Champion: Alexander Volkanovski

Ilia Topuria poses on the scale during the UFC 317 ceremonial weigh-in at T-Mobile Arena on June 27, 2025 in Las Vegas, Nevada. (Photo by Jeff Bottari/Zuffa LLC)

Lightweight – 155 pounds

For non-title bouts, lightweight athletes can weigh in up to 156 pounds, while title fights require athletes to weigh in at or under 155 pounds.

At UFC 274, then-champion Charles Oliveira was stripped of his title as soon as they fight began due to missing weight by half a pound (155.5) ahead of his championship bout against Justin Gaethje.

Current Champion: Ilia Topuria

Welterweight – 170 pounds

For non-title bouts, welterweight athletes can weigh in up to 171 pounds, while title fights require athletes to weigh in at or under 170 pounds.

Current Champion: Islam Makhachev

Middleweight – 185 pounds

For non-title bouts, middleweight athletes can weigh in up to 186 pounds, while title fights require athletes to weigh in at or under 185 pounds.

Current Champion: Khamzat Chimaev

Light heavyweight – 205 pounds

For non-title bouts, light heavyweight athletes can weigh in up to 206 pounds, while title fights require athletes to weigh in at or under 205 pounds.

Current Champion: Carlos Ulberg

Heavyweight – 265 pounds

For non-title bouts, heavyweight athletes can weigh in up to 266 pounds, while title fights require athletes to weigh in at or under 265 pounds.

Current Champion: Tom Aspinall