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Imperial to metric conversions

Money
12 old pennys (d) = 1 shilling (s) or 5 new pence
1 florin = 2 shillings or 10 new pence
Half a crown = 2 shillings and sixpence or 12 new pence
1 crown = 5 shillings = two half crowns or 25 new pence
1 pound () = 20 shillings = 240 old pennies or 100 new pence

Length
1 Inch =  2.54 cm
1 Foot = 12 inches or  30.48 cm
1 Yard = 3 feet or  91.44 cm
1 Perch = 5 yards or about   5 metres
1 Chain = 22 yards = 66 feet = length of a cricket wicket or about 20 metres
1 Furlong = 10 chains = 220 yards = length of a furrow or about 200 metres
1 Mile = 8 furlongs = 1760 yards = 5280 feet or about 1600 metres

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Area
1 Sq foot = 144 sq inches
1 Sq yard = 9 sq feet = 1296 sq inches or  0.836 sq metre
1 Sq Perch = 30 sq yards (simply referred to as a Perch in the Lambourne tithe award)
1 Rood = acre = 1,210 sq yards = 40 sq perch
1 Acre = 4 roods = 160 sq perch = 4840 sq yards or about 0.40 hectare (eg. a premier league football pitch)
1 Square mile = 640 acres or 259 hectares or 2.59 Sq Km

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Capacity
1 pint = 4 gills or 0.568 litre
1 quart = 2 pints or 1.136 litre
1 gallon = 4 quarts = 8 pints or 4.546 litre
1 peck = 2 gallons
1 bushel = 4 pecks = 8 gallons or about 36 litres

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Weight
1 ounce (oz) = 16 drams
1 pound (lb) = 16 oz or 0.454 kg
1 stone = 14 lb
1 quarter = 28 lb
1 hundredweight (cwt) = 4 quarters = 112 lb or about 50 kilograms
1 ton = 20 cwt = 2240 lb or 1.016 tonne

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