 
        
        Dictionary of Aviation - 2nd Edition
.pdfWeights and Measures: Metric Measures
| Length | 
 | 
| 1 millimetre (mm) | 
 | 
| 1 centimetre (cm) | = 10 mm | 
| 1 decimetre (dm) | = 10 cm | 
| 1 metre (m) | = 100 cm | 
| 1 kilometre (km) | = 1000 m | 
| Area | 
 | 
| 1 square millimetre (mm2) | 
 | 
| 1 square centimetre (cm2) | = l00 mm2 | 
| 1 square metre (m2) | = l0,000 cm2 | 
| 1 are (a) | = 100 m2 | 
| 1 hectare (ha) | = 100 ares | 
| 1 square kilometre (km2) | = 100 hectares | 
| Weight | 
 | 
| 1 milligram (mg) | 
 | 
| 1 gram (g) | = 1000 mg | 
| 1 kilogram (kg) | = 1000 g | 
| 1 tonne (t) | = 1000 kg | 
| Volume | 
 | 
| 1 cubic centimetre (cm3) | 
 | 
| 1 cubic decimetre (dm3) | = 1000 cm3 | 
| 1 cubic metre (m3) | = 1000 dm3 | 
| Liquid Volume | 
 | 
| 1 litre (l) | = 1 dm3 | 
| 1 hectolitre (hl) | = 100 l | 
=0.0394 in
=0.3937 in
=3.937 in
=1.0936 yds
=0.6214 mile
=0.0016 sq. in.
=0.155 sq. in
=1.196 sq. yds
=119.6 sq. yds
=2.4711 acres
=0.3861 sq. mile
=0.0154 grain
=0.0353 oz
=2.2046 lb
=0.9842 ton
=0.061 cu. in
=0.0351 cu. ft
=1.308 cu. yds
=1.76 pt
=22 gal
Weights and Measures: Imperial Measures
| Length | 
 | 
 | 
| 1 inch (in) | 
 | = 2.54 cm | 
| 1 foot (ft) | = 12 in | = 0.3048 m | 
| 1 yard (yd) | = 3 ft | = 0.9144 m | 
| 1 rod (rd) | = 5.5 yds | = 4.0292 m | 
| 1 chain | = 4 rds | = 20.117 m | 
| 1 furlong | = 10 chains | = 201.17 m | 
| 1 mile | = 8 furlongs | = 1.6093 km | 
| 1 nautical mile | = 2025.4 yds | = 1.852 km | 
| Area | 
 | 
 | 
| 1 square inch | 
 | = 6.4516 cm2 | 
| 1 square foot | = 144 sq. ins | = 0.0929 m2 | 
| 1 square yard | = 9 sq. ft | = 0.8361 m2 | 
| 1 acre | = 4840 sq. yds | = 4046.9 m2 | 
| 1 square mile | = 640 acres | = 259 hectares | 
| Weight | 
 | 
 | 
| 1 ounce (oz) | = 437.6 grains | = 28.350 g | 
| 1 pound (lb) | = 16 oz | = 0.4536 kg | 
| 1 stone | = 14 lb | = 6.3503 kg | 
| 1 hundredweight (cwt) | = 112 lb | = 50.802 kg | 
| 1 long ton | = 20 cwt | = 1.0161 t | 
| Volume | 
 | 
 | 
| 1 cubic inch | 
 | = 16.387 cm3 | 
| 1 cubic foot | = 1728 cu. ins | = 0.0283 m3 | 
| 1 cubic yard | = 27 cu. ft | = 0.7646 m3 | 
| Liquid Volume | 
 | 
 | 
| 1 fluid ounce (fl. oz) | = 8 fl. drachms | = 28.413 cm3 | 
| 1 pint (pt) | = 20 fl. oz | = 568.26 cm3 | 
| 1 pint | = 4 gills | = 0.5683 l | 
| 1 quart (qt) | = 2 pt | = 1.1365 l | 
| 1 gallon (gal) | = 8 pt | = 4.5461 l | 
| 1 bushel (bu) | = 8 gal | = 36.369 l | 
| Liquid Volume (US) | 
 | 
 | 
| 1 fluid ounce (US) | 
 | = 29.574 ml | 
| 1 pint (US) | = 16 fl. oz (US) | = 0.4723 l | 
| 1 gallon (US) | = 8 pt (US) | = 3.7854 l | 
Conversion factors: Imperial to Metric
| Length | 
 | 
 | Multiply by | 
| inches | 
 | millimetres | 25.4 | 
| inches | 
 | centimetres | 2.54 | 
| feet | 
 | metres | 0.3048 | 
| yards | 
 | metres | 0.9144 | 
| statute miles | 
 | kilometres | 1.6093 | 
| nautical miles | 
 | kilometres | 1.852 | 
| Area | 
 | 
 | Multiply by | 
| square inches | 
 | square centimetres | 6.4516 | 
| square feet | 
 | square metres | 0.0929 | 
| square yards | 
 | square metres | 0.8361 | 
| acres | 
 | hectares | 0.4047 | 
| square miles | 
 | square kilometres | 2.5899 | 
| Volume | 
 | 
 | Multiply by | 
| cubic inches | 
 | cubic centimetres | 16.3871 | 
| cubic feet | 
 | cubic metres | 0.0283 | 
| cubic yards | 
 | cubic metres | 0.7646 | 
| Liquid Volume | 
 | 
 | Multiply by | 
| fluid ounces (UK) | 
 | litres | 0.0284 | 
| fluid ounces (US) | 
 | litres | 0.0296 | 
| pints (UK) | 
 | litres | 0.5682 | 
| pints (US) | 
 | litres | 0.4732 | 
| gallons (UK) | 
 | litres | 4.546 | 
| gallons (US) | 
 | litres | 3.7854 | 
| Weight | 
 | 
 | Multiply by | 
| ounces (avoirdupois) | 
 | grams | 28.3495 | 
| ounces (troy) | 
 | grams | 31.1035 | 
| pounds | 
 | kilograms | 0.4536 | 
| tons (long) | 
 | tonnes | 1.016 | 
Conversion factors: Metric to Imperial
| Length | 
 | 
 | Multiply by | 
| millimetres | 
 | inches | 0.0394 | 
| centimetres | 
 | inches | 0.3937 | 
| metres | 
 | feet | 3.2806 | 
| metres | 
 | yards | 1.9036 | 
| kilometres | 
 | statute miles | 0.6214 | 
| kilometres | 
 | nautical miles | 0.54 | 
| Area | 
 | 
 | Multiply by | 
| square centimetres | 
 | square inches | 0.155 | 
| square metres | 
 | square feet | 10.764 | 
| square metres | 
 | square yards | 1.196 | 
| hectares | 
 | acres | 2.471 | 
| square kilometres | 
 | square miles | 0.386 | 
| Volume | 
 | 
 | Multiply by | 
| cubic centimetres | 
 | cubic inches | 0.061 | 
| cubic metres | 
 | cubic feet | 35.315 | 
| cubic metres | 
 | cubic yards | 1.308 | 
| Liquid Volume | 
 | 
 | Multiply by | 
| litres | 
 | fluid ounces (UK) | 35.1961 | 
| litres | 
 | fluid ounces (US) | 33.8150 | 
| litres | 
 | pints (UK) | 1.7598 | 
| litres | 
 | pints (US) | 2.1134 | 
| litres | 
 | gallons (UK) | 0.2199 | 
| litres | 
 | gallons (US) | 0.2642 | 
| Weight | 
 | 
 | Multiply by | 
| grams | 
 | ounces (avoirdupois) | 0.0353 | 
| grams | 
 | ounces (troy) | 0.0322 | 
| kilograms | 
 | pounds | 2.2046 | 
| tonnes | 
 | tons (long) | 0.9842 | 
| Temperature | 
 | 
 | Operation | 
| 
 | 
 | 
 | (in sequence) | 
| Celsius | 
 | Fahrenheit | x 9, ÷ 5, + 32 | 
| Fahrenheit | 
 | Celsius | - 32, x 5, ÷ 9 | 
