References

      Weights and Measures

 

Metric Equivalent US Equivalent
acre 0.404 685 64 hectares 43,560 feet
acre 4,046,856 4 meters 4,840 yards
acre 0.004 046 856 4 kilometers 0.001 562 5 miles, statute
acre 100 meters 119.599 yards
cable 219.456 meters 120 fathoms
chain (surveyor's) 20.116 8 meters 66 feet
cord (wood) 3.624 556 meters 128 feet
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 929.030 4 centimeters 144 inches
foot 0.092 903 04 meters 0.111 111 1 yards
foot 28.316 846 592 liters 7.480 519 gallons
foot 0.028 316 847 meters 1,728 inches
furlong 201.168 meters 220 yards
hand (height of horse) 10.16 centimeters 4 inches
hectare 10,000 meters 2.471 053 8 acres
inch 2.54 centimeters 0.083 333 33 feet
inch 6.451 6 centimeters 0.006 944 44 feet
inch 16.387 064 centimeters 0.000 578 7 feet
inch 16.387 064 milliliters 0.029 761 6 pints, dry
inch 16.387 064 milliliters 0.034 632 0 pints, liquid
kilometer 1,000 meters 0.621 371 19 miles, statute
kilometer 100 hectares 247.105 38 acres
kilometer 1,000,000 meters 0.386 102 16 miles, statute
kilometers 0.755 miles, nautical
knot (1 nautical mi/hr) 1.852 kilometers/hour 1.151 statute miles/hour
league, nautical 5.559 552 kilometers 3 miles, nautical
league, statute 4.828.032 kilometers 3 miles, statute
link (surveyor's) 20.116 8 centimeters 7.92 inches
meter 100 centimeters 1.093 613 yards
meter 10,000 centimeters 1.195 990 yards
meter 1,000 liters 1.307 951 yards
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, nautical 3.429 904 kilometers 1.325 miles, statute
mile, statute 1.609 344 kilometers 5,280 feet or 8 furlongs
mile, statute 258.998 811 hectares 640 acres or 1 section
mile, statute 2.589 988 11
pace 76.2 centimeters 30 inches
point (typographical) 0.351 459 8 millimeters 0.013 837 inches
rod 5.029 2 meters 5.5 yards
section (US) 2.589 988 1 kilometers 1 mile, statute or 640 acres
span 22.86 centimeters 9 inches
stere 1 meter 1.307 95 yards
ton, register 2.831 684 7 meters 100 feet
township (US) 93.239 572 kilometers 36 miles, statute
yard 0.914 4 meters 3 feet
yard 0.836 127 36 meters 9 feet
yard 0.764 554 86 meters 27 feet
Units
(Temperature)		 Metric Equivalent US Equivalent
degrees, Celsius (water boils at 100 degrees C, freezes at 0 degrees C) multiply by 1.8 and add 32 to obtain degrees F
degrees, Fahrenheit subtract 32 and divide by 1.8 to obtain degrees C water boils at 212 degrees F, freezes at 32 degrees F)
Units
(Volume)		 Metric Equivalent US Equivalent
barrel (petroleum, US)
(proof spirits, US)
(beer, US) 		158.987 29 liters
151.416 47 liters
117.347 77 liters		 42 gallons
40 gallons
31 gallons
bushel 35.239 07 liters 4 pecks
cup 0.236 588 2 liters 8 ounces, liquid (US)
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
gallon, liquid (US) 3.785 411 784 liters 4 quarts, liquid
gill (US) 118.294 118 milliliters 4 ounces, liquid
liter 0.001 meters 61.023 74 inches
liter 0.1 dekaliter 0.908 083 quarts, dry
liter 1,000 milliliters 1.056 688 quarts, liquid
minim (US) 0.061 611 52 milliliters 0.002 083 33 ounces, liquid or one-sixtieth of a dram
peck 8.809 767 5 liters 8 quarts, dry
pint, dry (US) 0.550 610 47 liters 0.5 quarts, dry
pint, liquid (US) 0.473 176 473 liters 0.5 quarts, liquid
quart, dry (US) 1.101 221 liters 2 pints, dry
quart, liquid (US) 0.946 352 946 liters 2 pints, liquid
tablespoon 14.786 76 milliliters 3 teaspoons
teaspoon 4.928 922 milliliters 0.333 333 tablespoons
yard 764.554 857 984 liters 201.974 gallons
Units
(Weight)		 Metric Equivalent US Equivalent
grain 64.798 91 milligrams 0.002 285 71 ounces, advp.
gram 1,000 milligrams 0.035 273 96 ounces, advp.
hundredweight, long 50.802 345 kilograms 112 pounds, avdp.
hundredweight, short 45.359 237 kilograms 100 pounds, avdp.
kilogram 0.001 tons, metric 2.204 623 pounds, avdp.
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
pennyweight 1.555 173 84 grams 24 grains
pound, avdp 453.592 37 grams 16 ounces, avdp
pound, troy 373.241 721 6 grams 12 ounces, troy
quintal 100 kilograms 220.462 26 pounds, avdp.
scruple 1.295 978 2 grams 20 grains
ton, long or deadweight 1,016.046 909 kilograms 2,240 pounds, avdp.
ton, metric 1,000 kilograms 2,204.623 pounds, avdp.
ton, metric 1,000 kilograms 32,150.75 ounces, troy
ton, short 907.184 74 kilograms 2,000 pounds, avdp.

 

Mathmematical notations
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 or 1,000 one thousand
10 or 100 one hundred
10^1 or 10 ten
10^0 or 1 one
10-^1 or 0.1 one-tenth
10- or 0.01 one-hundredth
10- 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 Relationships
Prefix Symbol Length, weight, or capacity Area Volume
exa E 10^18 106 10^54
peta P 10^15 100 10^45
tera T 10^12 104 106
giga G 10^9 10^18 107
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 10^6 10^9
hecto h 10 10^4 10^6
basic unit - 1 meter, 1 gram, 1 liter 1 meter 1 meter
deci d 10-^1 10- 10-
centi c 10- 10-^4 10-^6
milli m 10- 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 10-7
pico p 10-^12 10-4 10-6
femto f 10-^15 10-0 10-^45
atto a 10-^18 10-6 10-^54
Use the above table to convert units. For example, for converting from kilometers to meters, multiply by 1,000 (5.32 kilometers equals 5,320 meters) or to convert from meters to kilometers, multiply by 0.001 (5,320 meters equals 5.32 kilometers).