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D

• Dalton = 1/16 the mass of an atom of oxygen, 1.650x10^-24 gram.
• Day (tropical mean solar) = 24 mean solar hours, 1440 mean solar minutes, 8.6400X10^4 mean solar seconds.
• Day (sidereal) = 8.6164x10^4 mean solar seconds.
• Decigram = 1.543236 grains, 0.1 gram.
• Deciliter = 0.176 BR pint, 3.38147 fluid ounces, 0.1 liter, 100.0027 cubic centimeter.
• Decimeter = 0.3280833 foot, 0.3280843 BR foot, 3.93700 inches, 3.937011 BR inches, 0.1 meter.
• Decistere = 0.1 stere (cubic meter).
• Degree (angle) = 1/360 circumference (revolution), 1/90 quadrant, 0.017453 radian, 60 minutes, 3600 seconds.
• Degree (F) = 9C/5+32
• Degree (C) = 5F/9-17.7778
• Degree (absolute, K) = C+273.15
• Dekagram = 0.35273957 avoirdupois ounce, 5.64383 avoirdupois drams, 0.01 kilogram, 10 grams.
• Dekaliter = 0.28378 bushel, 0.27497 Br bushel, 1.13513 pecks, 9.08102 dry quarts, 18.162 dry pints, 10 liters, 10.00027 cubic decimeters.
• Dekameter = 1.98838 rods, 10.93611 yards, 10.93614 Br yards, 393.70 inches, 10 meters.
• Dekastere = 10 steres (cubic meters).
• Drachm (fluid Br) = 1/8 fluid Br ounce, 60 minims, 3.5515 cubic centimeters.
• Dram (apothecaries or troy) = 1 Br drachm, 0.008571429 avoirdupois pound, 1/96 apothecary or troy pound, 0.1371429 avoirdupois ounce, 1/8 apothecary or troy ounce, 2.194286 avoirdupois drams, 2.5 pennyweights, 3 scruples, 60 grains, 3.8879351 grams.
• Dram (avoirdupois) = 0.0047471788 apothecary or troy pound, 1/256 avoirdupois pound, 0.056966146 apothecary or troy ounce, 0.0625 avoirdupois ounce, 0.4557292 apothecary or troy dram, 1.139323 pennyweights, 1.3671875 scruples, 27.34375 grains, 1.771845 grams, 1.771845 milligrams.
• Dram (fluid) = 0.00390625 liquid quart, 0.0078125 liquid pint, 0.03125 gill, 1/8 fluid ounce, 0.225586 cubic inch, 60 minims, 3.6966 milliliters, 3.6967 cubic centimeters.
• Dyne (force) = 2.2481x10^-6 pound weight, 7.2330x10^-5 poundal, 0.0010197 gram weight, 0.015737 grain weight. (Assumes G=980.665 cm / second squared).

  E

• Ell = 45 inches, 114.30 centimeters.
• Em, Pica = 1/6 inch, 042333 centimeter.
• Erg = 2.3889x10^-11 kilogram calorie (mean), 9.4805x10^-11 BTU (mean), 1.0197x10^-8 kilogram-meter, 2.3889x10^-8 gram calorie (mean), 7.3756x10^-8 foot pound, 1x10^-7 joule, 2.3730x10^6 foot poundal, 0.0010197 gram centimeter, 1 dyne-centimeter.

  F

• Fathom = 6 feet, 1.828804 meters.
• Fermi = 1x10^-15 meter.
• Firkin = 9 gallons, 34.068 liters.
• Foot (US) = 1.6447x10^-4 nautical mile, 1.893939x10^-4 statute mile, 0.00151515 furlong, 0.0151515 Gunter's chain, 0.0606061 rod, 1/6 fathom, 1/3 yard, 12 inches, 0.3048006 meter, 30.48006 centimeters, 473404 wavelengths of red line of cadmium.
• Foot (Br) = 0.4 Br pace, 30.47997 centimeters.
• Foot (Paris) = 1 Pied.
• Foot of water (pressure) at 4 degrees C = 0.029499 atmosphere, 0.43352 pound per square inch, 0.88265 inch of Hg at 32 degrees F, 62.426 pounds per square foot, 304.79 kilograms per square meter.
• Foot Pound = 3.7662x10^-7 kilowatt-hour, 5.0505x10^-7 horsepower-hour, 3.2389x10^-4 kilogram-calorie (mean), 3.7662x10^-4 watt-hour, 4.7253x10^-4 cubic foot-atmosphere, 0.0012854 BTU (mean), 0.013381 liter-atmosphere, 0.138255 kilogram-meter, 0.32389 gram-calorie (mean), 1.35582 joule (absolute), 32.174 foot poundals, 1.3825x10^4 gram centimeters, 1.35582x10^7 ergs.
• Foot Pondal = 3.9952x10^-5 BTU (mean), 4.1589x10^-4 liter-atmosphere (normal), 0.0042972 kilogram-meter, 0.010067 gram-calorie, 0.031081 foot-pound, 0.042140 joule, 4.21402x10^5 ergs.
• Furlong (US or Br) = 1/8 mile, 10 Gunter's chains, 40 rods, 220 yards, 660 feet, 201.168 meters.

  G

• Gallon (US) = at 62 degrees F weighs 3.7820 kilogram or 8.337 avoirdupois lbs, 0.004951 cubic yard, 0.031746 liquid barrel, 0.13368 cubic foot, 0.83268 Br gallon, 4 quarts, 8 pints, 32 gills, 128 ounces, 231.00 cubic inches, 6.144x10^4 minims, 0.0037854 cubic meter, 3.7853 liters, 3785.4 cubic centimeters.
• Gallon (Br) = at 62 degrees F weighs 10 avoirdupois pounds, 0.02778 dry Br barrel, 1/8 dry Br bushel, 0.16054 cubic foot, 0.5 Br peck, 1.20094 gallons, 4 Br quarts, 8 Br pints, 32 Br gills, 160 Br ounces, 277.3 cubic inches, 4.54596 liters, 4545.96 cubic centimeters.
• Geepound = See slug.
• Gill (US) = 1/32 gallon, 1/8 quart, ¬ pint, 4 fluid ounces, 7.21875 cubic inches, 32 drams, 1920 minims, 0.118292 liters, 118.295 cubic centimeters.
• Gill (Br) = 1/32 Br gallon, ¬ Br pint, 5 fluid Br ounces, 0.14206 liter, 142.07 cubic centimeters.
• Grade = 1/400 circumference, 0.0157079 radian, 0.9 degree, 100 centesimal minutes.
• Grain = 1/7000 avoirdupois pound, 1/5760 apothecary or troy pound, 0.0022857 avoirdupois ounce, 0.0020833 apothecary or troy ounce, 0.03657143 avoirdupois dram, 0.016667 apothecary or troy dram, 0.0416667 troy pennyweight, 0.05000 apothecary scruple, 0.064798918 gram, 0.3240 metric carat, 64.798918 milligram.
• Gram = 0.00220462 avoirdupois pound, 0.00267923 apothecary or troy pound, 0.0352739 avoirdupois ounce, 0.0321507 apothecary or troy ounce, 0.564383 avoirdupois dram, 0.257206 apothecary or troy dram, 0.6430149 pennyweight, 0.771618 scruple, 15.4324 grains, 1x10^-6 metric ton, 1x10^-4 myriagram, 0.001 kilogram, 5 metric carats, 1000 milligrams, 1x10^6 microgram.
• Gram-Calorie (mean) = 1.5593x10^-6 horse power hours, 0.001 kilogram calorie, 0.0011628 watt-hour, 0.001459 cubic foot atmosphere, 0.0039685 BTU (mean), 0.041311 liter-atmosphere, 0.42685 kilogram-meter, 3.0874 foot-pounds, 4.186 joules (absolute), 99.334 foot-poundals.
• Gram-calorie (15°C) = 4.185 joules (absolute).
• Gram-calorie (20°C) = 4.181 joules (absolute).
• Gram-centimeter = 2.3427x10^-8 kilogram-calorie (mean), 9.2972x10^-8 BTU (mean), 1x10^-5 kilogram-meter, 2.3427x10^-5 gram-calorie (mean), 7.233x10^-5 foot-pound, 9.80665x10^-5 joule (absolute), 980.7 ergs.

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