Weights and Measures

Exponents immediately follow the ^ symbol throughout this appendix. Mathematical Power Name 10^18 or 1,000,000,000,000,000,000 one quintillion 10^15 or 1,000,000,000,000,000 one quadrillion 10^12 or 1,000,000,000,000 one trillion 10^9 or 1,000,000,000 one billion 10^6 or 1,000,000 one million 10^3 or 1,000 one thousand 10^2 or 100 one hundred 10^1 or 10 ten 10^0 or 1 one 10-^1 or 0.1 one-tenth 10-^2 or 0.01 one-hundredth 10-^3 or 0.001 one-thousandth 10-^6 or 0.000 001 one-millionth 10-^9 or 0.000 000 001 one-billionth 10-^12 or 0.000 000 000 001 one-trillionth 10-^15 or 0.000 000 000 000 001 one-quadrillionth 10-^18 or 0.000 000 000 000 000 00 one-quintillionth Metric Interrelationships Conversions from a multiple or submultiple to the basic units of meters, liters, or grams can be done using the table. For example, to convert from kilometers to meters, multiply by 1,000 (9.26 kilometers equals 9,260 meters) or to convert from meters to kilometers, multiply by 0.001 (9,260 meters equals 9.26 kilometers). Prefix Symbol Length, weight,
or capacity Area Volume exa E 10^18 10^36 10^54 peta P 10^15 10^30 10^45 tera T 10^12 10^24 10^36 giga G 10^9 10^18 10^27 mega M 10^6 10^12 10^18 hectokilo hk 10^5 10^10 10^15 myria ma 10^4 10^8 10^12 kilo k 10^3 10^6 10^9 hecto h 10^2 10^4 10^6 basic unit - 1 meter, 1 meter^2 1 meter^3
1 gram,
1 liter deci d 10-^1 10-^2 10-^3 centi c 10-^2 10-^4 10-^6 milli m 10-^3 10-^6 10-^9 decimilli dm 10-^4 10-^8 10-^12 centimilli cm 10-^5 10-^10 10-^15 micro u 10-^6 10-^12 10-^18 nano n 10-^9 10-^18 10-^27 pico p 10-^12 10-^24 10-^36 femto f 10-^15 10-^30 10-^45 atto a 10-^18 10-^36 10-^54 Equivalents Units Metric Equivalent US Equivalent acre 0.404 685 64 hectares 43,560 feet^2 acre 4,046,856 4 meters^2 4,840 yards^2 acre 0.004 046 856 4 0.001 562 5 miles^2,
kilometers^2 statute are 100 meters^2 119.599 yards^2 barrel (petroleum, US) 158.987 29 liters 42 gallons (proof spirits, US) 151.416 47 liters 40 gallons (beer, US) 117.347 77 liters 31 gallons bushel 35.239 07 liters 4 pecks cable 219.456 meters 120 fathoms chain (surveyor's) 20.116 8 meters 66 feet cord (wood) 3.624 556 meters^3 128 feet^3 cup 0.236 588 2 liters 8 ounces, liquid (US) degrees, Celsius (water boils at 100 multiply by 1.8 and add 32
degrees C, freezes at to obtain degrees F
0 degrees C) degrees, Fahrenheit subtract 32 and divide water boils at 212 degrees
by 1.8 to obtain F, freezes at 32 degrees F)
degrees C dram, avdp. 1.771 845 2 grams 0.0625 5 ounces, avdp. dram, troy 3.887 934 6 grams 0.125 ounces, troy dram, liquid (US) 3.696 69 milliliters 0.125 ounces, liquid fathom 1.828 8 meters 6 feet foot 30.48 centimeters 12 inches foot 0.304 8 meters 0.333 333 3 yards foot 0.000 304 8 kilometers 0.000 189 39 miles, statute foot^2 929.030 4 centimeters^2 144 inches^2 foot^2 0.092 903 04 meters^2 0.111 111 1 yards^2 foot^3 28.316 846 592 liters 7.480 519 gallons foot^3 0.028 316 847 meters^3 1,728 inches^3 furlong 201.168 meters 220 yards gallon, liquid (US) 3.785 411 784 liters 4 quarts, liquid gill (US) 118.294 118 milliliters 4 ounces, liquid grain 64.798 91 milligrams 0.002 285 71 ounces, avdp. gram 1,000 milligrams 0.035 273 96 ounces, avdp. hand (height of horse) 10.16 centimeters 4 inches hectare 10,000 meters^2 2.471 053 8 acres hundredweight, long 50.802 345 kilograms 112 pounds, avdp. hundredweight, short 45.359 237 kilograms 100 pounds, avdp. inch 2.54 centimeters 0.083 333 33 feet inch^2 6.451 6 centimeters^2 0.006 944 44 feet^2 inch^3 16.387 064 centimeters^3 0.000 578 7 feet^3 inch^3 16.387 064 milliliters 0.029 761 6 pints, dry inch^3 16.387 064 milliliters 0.034 632 0 pints, liquid kilogram 0.001 tons, metric 2.204 623 pounds, avdp. kilometer 1,000 meters 0.621 371 19 miles, statute kilometer^2 100 hectares 247.105 38 acres kilometer^2 1,000,000 meters^2 0.386 102 16 miles^2, statute knot (1 nautical 1.852 kilometers/hour 1.151 statute miles/hour mi/hr) league, nautical 5.556 kilometers 3 miles, nautical league, statute 4.828.032 kilometers 3 miles, statute link (surveyor's) 20.116 8 centimeters 7.92 inches liter 0.001 meters^3 61.023 74 inches^3 liter 0.1 dekaliter 0.908 083 quarts, dry liter 1,000 milliliters 1.056 688 quarts, liquid meter 100 centimeters 1.093 613 yards meter^2 10,000 centimeters^2 1.195 990 yards^2 meter^3 1,000 liters 1.307 951 yards^3 micron 0.000 001 meter 0.000 039 4 inches mil 0.025 4 millimeters 0.001 inch mile, nautical 1.852 kilometers 1.150 779 4 miles, statute mile^2, nautical 3.429 904 kilometers^2 1.325 miles^2, statute mile, statute 1.609 344 kilometers 5,280 feet or 8 furlongs mile^2, statute 258.998 811 hectares 640 acres or 1 section mile^2, statute 2.589 988 11 0.755 miles^2, nautical
kilometers^2 minim (US) 0.061 611 52 milliliters 0.002 083 33 ounces, liquid or one-sixtieth of a dram ounce, avdp. 28.349 523 125 grams 437.5 grains ounce, liquid (US) 29.573 53 milliliters 0.062 5 pints, liquid ounce, troy 31.103 476 8 grams 480 grains pace 76.2 centimeters 30 inches peck 8.809 767 5 liters 8 quarts, dry pennyweight 1.555 173 84 grams 24 grains pint, dry (US) 0.550 610 47 liters 0.5 quarts, dry pint, liquid (US) 0.473 176 473 liters 0.5 quarts, liquid point (typographical) 0.351 459 8 millimeters 0.013 837 inches pound, avdp 453.592 37 grams 16 ounces, avdp pound, troy 373.241 721 6 grams 12 ounces, troy quart, dry (US) 1.101 221 liters 2 pints, dry quart, liquid (US) 0.946 352 946 liters 2 pints, liquid quintal 100 kilograms 220.462 26 pounds, avdp. rod 5.029 2 meters 5.5 yards scruple 1.295 978 2 grams 20 grains section (US) 2.589 988 1 kilometers^2 1 mile^2, statute or 640 acres span 22.86 centimeters 9 inches stere 1 meter^3 1.307 95 yards^3 tablespoon 14.786 76 milliliters 3 teaspoons teaspoon 4.928 922 milliliters 0.333 333 tablespoons ton, long or 1,016.046 909 kilograms 2,240 pounds, avdp. deadweight ton, metric 1,000 kilograms 2,204.623 pounds, avdp. ton, metric 1,000 kilograms 32,150.75 ounces, troy ton, register 2.831 684 7 meters^3 100 feet^3 ton, short 907.184 74 kilograms 2,000 pounds, avdp. township (US) 93.239 572 kilometers^2 36 miles^2, statute yard 0.914 4 meters 3 feet yard^2 0.836 127 36 meters^2 9 feet^2 yard^3 0.764 554 86 meters^3 27 feet^3 yard^3 764.554 857 984 liters 201.974 gallons

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Standard quantities by which comparisons are made between an object to be measured and a known quantity of the same kind (see measurement).

Weights and measures are fundamental to the sciences, to engineering, building, and other technical matters, and to much everyday activity. See also foot; gram; International System of Units; metre; metric system; pound.

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      the standard or agreed upon units for expressing the amount of some quantity, such as capacity, volume, length, area, number, and weight. See measurement system.

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