Conversion Tables

Distance
1 inch	2.54 centimetres	1 millimetre	0.03937 inch
1 foot	0.3048 metres	1 centimetre	0.3937 inch
1 yard	0.9144 metres	1 metre	1.094 yard
1 mile	1.6093 kilometres	1 kilometre	0.6214 mile
1 nautical mile	1.8532 kilometres	1 kilometre	1.539 nautical mile
Surface or area
1 square inch	6.4516 square centimetre	1 square centimetre	0.1550 square inch
1 square foot	0.0929 square metre	1 square metre	10.76 square feet
1 square yard	0.8361 square metre	1 hectare	2.4711 acres
1 acre	0.4047 hectare
1 square mile	259.0 hectares
Volume/capacity
1 cubic inch	16.387 cubic centimetres	1 cubic centimetre	0.061 cubic inch
1 cubic foot	0.0283 cubic metre	1 cubic decimetre	0.035 cubic foot
1 cubic yard	0.7646 cubic metre	1 cubic metre	1.308 cubic yard
Measures
Imperial		US
1 pint	0.5506 litre	1 pint	0.473 litres
1 quart	1.136 litre	1 quart	0.9463 litres
1 gallon	4.546 litres	1 gallon	3.785 litres
1 bushel	26.369 litres	1 bushel	35.24 litres
Avoirdupois weight
1 ounce	28.35 grams	1 gram	0.035 ounce
1 pound	453.59 grams	1 kilogram	2.205 pounds
1 hundred weight	45.36 kilograms	1 tonne	0.984 ton
1 ton	1.016 tonnes
Temperature
Celcius• = ((Fahrenheit-32)*5)/9		Fahrenheit• = ((Celcius)*9)/5)-32
Velocity
1 miles per hour		1.6093 kilometre per hour
1 foot per minute		0.3048 metres per minute
Energy
1 Joule	0.239 Calorie	1 Calorie	4.184 Joule
Pressure
Pounds per square inch	0.069 Bar	Bar	14.5 psi
Pounds per square inch	6.8949 kPa	KPascals	0.145 psi
Metric numbers
1 Picogram 10-12		= 10^-12 g
1000 picograms		= 1 nanogram (ng) or 10^-9 g
1000 nanograms		= 1 microgram (µg) or 10^-6 g
1000 micrograms		= 1 milligram (mg) or 10^-3 g
1000 milligrams		= 1 gram (g)
1000 grams		= 1 kilogram (kg)
ppm		= mg/kg