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The stone or stone weight (abbreviation: st.) [1] is an English and British imperial unit of mass equal to 14 avoirdupois pounds (6.35 kg). [ nb 1 ] The stone continues in customary use in the United Kingdom and Ireland for body weight .
For a variety of reasons (largely historical), weight classes of the same name can be of vastly different weights. For example, a boxing middleweight weighs up to 72 kg (160 lb), an ISKA middleweight upper limit is 75 kg (165 lb), and a K-1 middleweight upper limit is 70 kg (154 lb).
A stone is a former unit used in Hong Kong equal to 120 catties and a gwan (鈞) is 30 catties. Catty or kati is still used in Southeast Asia as a unit of measurement in some contexts especially by the significant Overseas Chinese populations across the region, particularly in Malaysia and Singapore.
The Ardblair Stones is a strength feat, where nine reinforced concrete lifting stones of ascending weight are used. [ 1 ] [ 2 ] The 9 stones weigh 18 kg (40 lb), 32 kg (71 lb), 41 kg (90 lb), 50 kg (110 lb), 75 kg (165 lb), 107 kg (236 lb), 118 kg (260 lb), 135 kg (298 lb) and 152 kg (335 lb) respectively. [ 3 ]
The MMA welterweight class is therefore significantly heavier than the welterweight class of these other sports. For the sake of uniformity, many American mixed martial arts websites refer to competitors between 156 and 170 lb (71 and 77 kg) as welterweights. This encompasses the Shooto middleweight division (167 lb / 76 kg).
75 kg (165 lbs) 85 kg (187 lbs) Cadets (male youths aged 16–17, as well as male youths at age 15 with a medical certificate and parental authorization) compete in freestyle wrestling and/or Greco-Roman wrestling in the following 10 weight classes: [3] 41 to 45 kg (90 to 99 lbs) 48 kg (106 lbs) 51 kg (112 lbs) 55 kg (121 lbs) 60 kg (132 lbs)
The 1947 Admiral-Lord Mountevans rules set out seven weight divisions with maximum weight limits and called for champions to be crowned of each limit: Lightweight: 11st (154 lb or ~70 kg), Welterweight 11st 11 lb (165 lb or ~75 kg), Middleweight 12st 8 lb (176 lb or ~80 kg), Heavy Middleweight 13st 5 lb (187 lb or ~85 kg), Light Heavyweight ...
The long or imperial hundredweight of 8 stone or 112 pounds (50.80 kg) is defined in the British imperial system. [ 2 ] Under both conventions, there are 20 hundredweight in a ton , producing a " short ton " of 2,000 pounds (907.2 kg) and a " long ton " of 2,240 pounds (1,016 kg).