Unit Measurement

1 inch = 25.40mm
1 foot = 304.8mm
1 yard = 914.4mm
1 yard = 3 feet
1 metre = 1.0936 yards
1 yard = 0.9144 metres
1 metre = 3.281 feet


Volume

 1 cubic metre = 35.315 cubic feet
1 cubic metre = 1.3079 cubic yards
1 cubic foot = 0.0283 cubic metre
1 cubic yard = 0.7646 cubic metre


Weight

 1 tonne (metric) = 2205 lbs
1 ton imperial = 2240 lbs
1000 grams = 1 kilogram
1000 kilograms = 1 tonne
1 kilogram = 2.20462 lbs.
1 kilogram = 0.0197 cwt
1 cwt = 112 lbs
1 cwt = 50.8 kg
1 lb = 0.4536 kg
1 lb = 16 oz
1 oz = 28.3 grams


Liquid Volume

 1 litre = 0.035 cubic feet
1 cubic ft. = 28.32 litres
1 gallon = 4.5461 litres
1 cubic ft. = 6.23 gallons
1 cubic yd = 168.21 gallons
1 cubic mt = 1000 litres


Liquid Conversion
1000 millilitres(ml) = 1 litre
1 litre = 1.76 pints
1 ml = 1cc = 0.0017 pints. 1 litre = 0.22 gallons
1 fl.oz. = 28.413 ml or cc
1 pint = 568 ml or cc
1 pint = 0.568 litres


Area

 1 square mm = 0.00155 sq. inches
1 square metre = 10.764 sq. feet
1 square metre = 1.196 sq. yards
1 square inch = 645.20 sq. mm
1 square foot = 0.0929 sq. metres
1 square yard = 0.8361 sq. metres


Weights of materials

 Dry sand fine – 1.28 tonnes per cubic metre
Dry sand coarse – 1.6 tonnes per cubic metre
Topsoil (some moisture) – 1.44 tonnes per cubic metre
Ballast – 1.76 tonnes per cubic metre
Gravel – 1.92 tonnes per cubic metre
Shingle – 1.62 tonnes per cubic metre
Cement – 25 kg bags
Stiff clay – 1.6 tonnes per cubic metre
Loam – 1.28 tonnes per cubic metre
Peat (wet) – 0.96 tonnes per cubic metre
Peat (dry) – 0.8 tonnes per cubic metre
Lump chalk – 1.2 tonnes per cubic metre
Sandstone – 2.32 tonnes per cubic metre
Lias – 2.48 tonnes per cubic metre JB
Granite – 2.72 tonnes per cubic metre
Slate – 2.8 tonnes per cubic metre
Flint – 2.3 tonnes per cubic metre
Yorkstone – 2.5 tonnes per cubic metre
Brick rubble – 1.8–2.2 tonnes per cubic metre
Coverage of stone for 1 tonne weight
Sets (100mm x 100mm x 100mm) = 3.9 sq.m.
Cobbles 50/70mm on end = 6.5 sq.m