This section is from the book "Scientific American Reference Book. A Manual for the Office, Household and Shop", by Albert A. Hopkins, A. Russell Bond. Also available from Amazon: Scientific American Reference Book.
Metric to Customary. | Customary to Metric. | |||||||||
Lengths................................................ | 1 | Millimeter | _ | 0.03937 | inch | 1 | Inch | _ | 25.4001 | millimeters |
1 | Centimeter | = | 0.3937 | " | 1 | " | = | 2.54001 | centimeters | |
1 | Meter | = | 39.37 | " | 1 | " | = | 0.0254 | meter | |
1 | " | = | 3.28083 | feet | 1 | Foot | = | 0.304801 | " | |
1 | " | = | 1.093611 | yards | 1 | Yard | = | 0.914402 | " | |
1 | Kilometer | = | 0.62137 | mile | 1 | Mile | = | 1.60935 | kilometers | |
Areas............................................... | 1 | Square Millimeter | = | 0.00155 | square inch | 1 | Square Inch | = | 645.16 | square millimeters |
1 | " Centimeter | = | 0.1550 | " " | 1 | " " | = | 6.452 | " centimeters | |
1 | " Meter | = | 10.764 | " feet | 1 | " Foot | = | 0.0929 | " meter | |
1 | " " | = | 1.1960 | " yards | 1 | " Yard | = | 0.8361 | " " | |
1 | Kilometer | = | 0.3861 | " mile | 1 | " Mile | = | 2.5900 | " kilometers | |
1 | Hectare | = | 2.471 | acres | 1 | Acre | = | 0.4047 | hectares | |
Volumes.................................... | 1 | Cubic Millimeter | = | 0.000061 | cubic inch | 1 | Cubic Inch | = | 16,387.2 | cubic millimeters |
1 | " Centimeter | = | 0.0610 | " " | 1 | " " | = | 16.3872 | centimeters | |
1 | " Meter | = | 35.314 | " feet | 1 | " Foot | = | 0.02832 | " meter | |
1 | " " | = | 1.3079 | " yard | 1 | " Yard | = | 0.7645 | " " | |
Capacity..................Liquid............................. | 1 | Liter | = | 1.05668 | quarts | 1 | Quart | = | 0.94636 | liter |
1 | " | = | 0.26417 | gallon | 1 | Gallon | = | 3.78543 | " | |
Dry.......................... | 1 | Liter | = | 0.9081 | quart | 1 | Quart | = | 1.1012 | liters |
1 | " | = | 0.11351 | peck | 1 | Peck | = | 8.80982 | " | |
1 | Decaliter | = | 1.1351 | " | 1 | " | = | 0.8810 | decaliter | |
1 | Hectoliter | = | 2.83774 | bushels | 1 | Bushel | = | 0.35239 | hectoliter | |
Masses......................Avoirdapois.................. | 1 | Gram | =-- | 15.4324 | grains | 1 | Grain | __ | 0.06480 | gram |
1 | " | = | 0.03527 | ounce | 1 | Ounce | = | 28.3495 | " | |
1 | Kilogram | = | 2.20462 | pounds | 1 | Pound | = | 0.45359 | kilogram | |
Troy ................... | 1 | Gram | = | 0.03215 | ounce | 1 | Ounce. | = | 31.10348 | grams |
1 | Kilogram | = | 2.67923 | pounds | 1 | Pound | = | 0.37324 | kilogram | |
Apothecaries'. | 1 | Gram | _ | 0.2705 | dram | 1 | Dram | = | 3.6967 | grams |
1 | " | = | 0.8115 | scruple | 1 | Scruple | = | 1.2322 | " | |
 
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