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Weights and Measures

British Currency
Pre-decimal Amount Decimal
  1 penny 0.42p
12 pence 1 shilling 5p
2 shillings 1 florin 10p
2 shillings 6 pence a half-crown 12.5p
5 shillings 1 crown 25p
13 shillings 4 pence 1 mark 66.7p
20 shillings 1 pound or
sovereign
£1
21 shillings 1 guinea £1:05p
Length
  1 inch 2.54 cm
4 inches 1 hand 10.16 cm
(now 10 cm)
12 inches 1 foot 30.48 cm
3 feet 1 yard 91.439841 cm
45 inches 1 ell 114.3 cm
2 yards 1 fathom 1.829 m
5½ yards 1 rod, pole
or perch
5.029 m
22 yards 1 chain 20.1168 m
10 chains 1 furlong 201.168 m
8 furlongs 1 mile 1609.344 m
3 miles 1 league 4828.032 m
Area
  1 square inch 645.16 sq mm
144 sq inches 1 square foot 0.09290304 sq m
9 sq feet 1 square yard 0.8361274 sq m
30.25 sq yards 1 square pole 25.29285 sq m
40 sq poles 1 rood 1011.706 sq m
4 roods ie
4840 sq yards
1 acre 4046.825 sq m
639.9974 acres 1 square mile 258.9988 ha
Cubic Measure
  1 cubic inch 16.38706 cubic cm
1728 cubic inches 1 cubic foot 28.31685 lt
27 cubic feet 1 cubic yard 0.7645549 cubic m
Capacity
  1 fluid ounce 28.41307 cubic cm
5 fluid oz 1 gill 0.1420654 lt
4 gills 1 pint 0.568261 lt
2 pints 1 quart 1.136522 lt
4 quarts 1 gallon 4.546092 lt
2 gallons 1 peck 9.092184 lt
52½ gallons 1 hogshead 238.6698 lt
8 Bushels 1 quarter 281.9126 lt
Avoirdupois
  1 grain 64.8 mg
  1 dram 1.772 g
16 drams 1 ounce 28.34952 g
16 ounces 1 pound 0.4535924 kg
14 pounds 1 stone 6.350293 kg
20 or 21 pounds 1 score 9 - 9.5 kg
2 stones 1 quarter 12.70059 kg
4 quarters 1 hundredweight 50.80235 kg
20 cwt 1 ton 1.016047 tonnes
Miscellaneous
Power 1 horsepower 550 ft Lbs/sec
Speed 1 knot 6076.115 ft/hr
Force 1 poundal 13825 dynes
Force 1 newton 105 dynes
Energy 1 foot poundal 0.04214011 joules
Energy 1 foot Lb 1.355818 joules
Pressure 1 Lb/in2 70.30696 g/cm2
Magnetic 1 weber 108 maxwells
  1 degree 0.01745 radians
  1 kilocalorie 3.968321 BTU
Heat 1 calorie 4.1868 joules
Light 1 candella 0.982 international candles
Light 1 Angstrong unit 10-8 cm.
Power ratio 1 neper 8.686 db.

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This page (weigmeas.html) was last modified on Sunday 27/01/2013