Hundredweight (UK) (cwt (UK))

Imperial (British)Traditional unit (still used in some regions)

112 pounds (50.80 kg), eight stone. Twenty of them make a long ton.

1 hundredweight (UK) = 50.80234544 kilograms (exactly).

1 hundredweight (UK) = 50.80234544 kilograms

About the hundredweight (UK)

Hundredweight, abbreviated cwt, comes from the medieval Latin centum for a hundred, though the English hundred around 1300 varied in size. The Weights and Measures Act 1835 fixed the imperial unit at 112 pounds, which is 8 stone, or about 50.80 kilograms. NIST gives the factor as 50.80235 kilograms and does not mark it as exact.

A rival 100 pound version crossed the Atlantic and was used in the United States and Canada. Britain banned it in 1824 over fraud fears, then legalised it in 1879 as the cental after merchants importing American wheat and tobacco pressed for it. Twenty long hundredweight make a 2,240 pound ton. The unit measured cattle, fodder, fertiliser and coal, and old anvils and church bells carry weights stamped in hundredweight, quarters and pounds. Guernsey and older van and truck ratings still use it.

Sources: Wikipedia: Hundredweight; NIST SP 811, Appendix B.8 conversion factors

Hundredweight (UK) conversion chart

1 hundredweight (UK) expressed in every other weight & mass unit:

Unit1 hundredweight (UK)
Kilograms50.80234544
Grams50,802.34544
Metric Tons0.05080234544
Pounds112
Ounces1,792
Milligrams50,802,345.44
Micrograms50,802,345,440
Carats254,011.7272
Stone8
Short Tons0.056
Long Tons0.05
Troy Ounces1,633.333333
Daltons3.059388749×10²⁸
Earth Masses8.506470888×10⁻²⁴
Solar Masses2.554845959×10⁻²⁹
Quintals0.5080234544
Grains784,000
Drams28,672
Hundredweight (US)1.12
Quarters (UK)4
Slugs3.481066419
Troy Pounds136.1111111
Pennyweights32,666.66667
Scruples39,200
Apothecaries' Drams13,066.66667
Roman Pounds154.4613726
Roman Ounces1,854.100199
Attic Talents1.939316897
Attic Minas116.3590138
Attic Drachmas11,635.90138
Obols69,815.4083
Shekels (biblical)4,417.595256
Hebrew Talents1.763970328
Monme13,547.29212
Kin84.67057573
Kan13.54729212
Qian (Chinese)10,160.46909
Liang (Chinese)1,016.046909
Jin (Chinese)101.6046909
Dan (Chinese)1.016046909
Catties (Hong Kong)84
Taels (Hong Kong)1,344
Tola4,355.555556
Seers54.44444444
Maunds1.361111111
Zolotniks11,909.20772
Funts124.0542471
Poods3.101356178
Libras (Castilian)110.4175578
Arrobas (Spanish)4.416702314
Arrobas (Brazilian)3.386823029

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