When I get time, I will sort them into more useful headings like area, linear measure etc.
1 acre = 0.404 685 642 hectares
1 acre = 4 roods
1 acre = 10 sq chains
1 acre = 160 square rods
1 acre = 4,046.856 422 4 square metres
1 acre = 4,840 square yards
1 acre = 43,560 square feet
1 acre foot = 1233.481 84 cu metres
1 acre foot = 1613.333 33 cu yds
1 acre foot = 43,560 cu ft
1 angstrom (Å) = 0.000 10 micrometres (microns)
1 angstrom = 0.1 nanometres
1 angstrom = 10-10 metres
1 are (a) = 0.024 71 acres
1 are = 0.098 84 roods
1 are = 100 sq metres
1 are = 119.599 00 sq yds
1 are = 0.010 hectares
1 atmosphere (atm) = 1 kg/sq cm
1 atmosphere = 14.223 35 lbs/sq in
1 atmosphere = 29.921 26 inches of Mercury
1 atmosphere = 101.360 00 kilopascals
1 atmosphere = 760 mm of Mercury
1 atmosphere = 101,325 Newtons per square metre
1 bananosecond = the time it takes between slipping on a peel and hitting
the ground.
1 bar = 1.019 45 atmospheres
1 bar = 100 kilopascals
1 bar = 1000 millibars
1 barrel of oil = 35 gallons (?????)
1 barrel of oil = 42.033 22 gallons (????)
1 barrel of oil = 159.108 60 litres
1 barrel of water = 36 gallons (Imperial)
1 bath = 72 log
1 billigram = the weight an evangelist carries with God
1 board foot = 0.002 36 cu metres
1 British Thermal Unit (BTU) = 0.000 29 kilowatt
1 British Thermal Unit = 1.055 06 kilojoules
1 British Thermal Unit = 777.500 00 foot pounds
1 BTU per hour = 0.293 07 Watts
1 BTU per minute = 0.017 58 kilowatts
1 BTU per minute = 0.023 56 Horsepower
1 BTU per pound = 2.326 00 kilojoules
1 BTU per cu ft = 37.258 90 kilojoules
1 bushel (Imp) = 0.125 00 quarters
1 bushel (Imp) = 4 pecks
1 bushel (Imp) = 0.036 37 cu metres
1 bushel (Imp) = 8 gallons
1 bushel (Imp) = 36.367 68 litres
1 butt of water = 110 gallons
1 butt of water = 500.055 60 litres
1 cable length = 140 fathoms
1 cental = 45.359 40 kg
1 cental = 100 pounds
1 centimetre (cm) = 0.393 70 inches
1 centimetre = 0.328 feet
1 cm per second = 0.036 00 km/hr
1 cm per second = 1.968 50 ft/min
1 chain (Gunters) = 4 rods
1 chain (Gunters) = 22 yards (lenght of a cricket pitch)
1 chain (Gunters) = 66 feet
1 chain (Gunters) = 100 links
1 chain (Gunters) = 40.116 60 metres
1 chaldron = 1.309 27 cu metres
1 chaldron = 4.50 quarters
1 chaldron = 36.0 bushels
1 cheval vapeur = 1 pfederstarke
1 Coulomb = 0.1 electromagnetic units
1 Coulomb = 1 Ampere per second
1 cubic centimetre = 0.001 00 litres
1 cubic centimetre = 0.001 76 pints
1 cubic centimetre = 0.061 02 cu inches
1 cubic foot = 0.028 317 cubic metres
1 cubic foot = 62.321 lbs (water)
1 cubic foot = 1728 cubic inches
1 cubic foot per minute = 0.103 81 gals/sec
1 cubic foot per minute = 0.471 93 litres/sec
1 cubic foot per minute = 62.430 00 pounds/min
1 cubic foot per minute = 471.947 44 cu cm/sec
1 cubic foot per second = 13.574 38 inches/sq
1 cubic foot per second = 28.316 05 litres/sec
1 cubic foot per second = 373.730 31 gals per
1 cubic inch = 0.000 02 litres
1 cubic inch = 0.028 83 pints
1 cubic inch = 16.387 06 cubic centimetres
1 cubic inch = 252.158 grains (water)
1 cubic metre = 1.307 954 cubic yards
1 cubic metre = 35.314 67 cubic feet
1 cubic metre = 219.975 54 gallons
1 cubic metre = 423.776 00 super feet
1 cubic metre = 1000 litres
1 cubic metre = 1759.604 31 pints
1 cubic metre = 61,023.744 09 cubic inches
1 cubic metre = 1,000,000,000 cubic cm
1 cubic metre per sec = 2.918 57 acre feet
1 cubic metre per sec = 35.314 67 cu ft per second
1 cubic millimetre = 0.000 06 cubic inches
1 cubic yard = 0.764 553 cu metres
1 cubic yard = 27 cubic feet
1 cubic yard = 168.183 37 gallons
1 cubic yard = 764.554 86 litres
1 cu yd per min = 12.742 58 litres per sec1 stone = 6.350 288 kilograms
1 cubit (short) = elbow to knuckles of a closed fist
1 cubit (short) = 6 hand breadths
1 cubit (long) = 1 short cubit plus a hand breadth
1 cubit = 12 to 25.2 inches but popularly 18 inches
1 cubit (bible) = 21.60 inches
1 cup = 250 ml
1 cup (US) = 240 ml
1 cup = 8 oz
1 cup (US) = 1.25 cups (UK/Aus)
1 cup (US) = 2.5 pints (UK/Aus)
1 decacards = 10 cards
1 decadent = 3.3333 tridents
1 decoration = 10 rations
1 demijohn = 0.5 lavatories
1 diagram = 2 monograms
1 drachm (Apothecaries) = 0.1250 ounces
1 drachm (Apothecaries) = 3 scruples
1 drachm (Apothecaries) = 3.887 93 grams
1 dram (Avoirdupois) = 0.062 50 ounces
1 dram (Avoirdupois) = 1.771 95 grams
1 dram (Avoirdupois) = 27.343 75 grains
1 duim = 1 inch
1 dyne = 0.000 01 Newtons
1 ephah = 72 log
1 ephin = the most commonly used adjective.
1 fathom = 1.828 60 metres
1 fathom = 6 feet
1 fig Newton = 1 kilogram of falling figs.
1 fluid drachm = 60 minim's
1 fluid drachm = 3.552 millilitres
1 fluid ounce = 8 drachms
1 fluid ounce = 28.412 millilitres
1 fluid scruple = 1.184 millilitres
1 foot = 0.304 60 metres
1 foot pound = 1.36 Newton metres
1 furlong = 10 chains
1 furlong = 201.168 metres
1 furlong = 220 yards
1 gallon (Imperial) = 0.004 55 cu metres
1 gallon (Imperial) = 0.005 95 cu yds
1 gallon (Imperial) = 0.500 000 pecks
1 gallon (Imperial) = 1.196 31 gallons (US)
1 gallon (Imperial) = 4 quarts
1 gallon (Imperial) = 4.545 96 litres
1 gallon (Imperial) = 8 pints
1 gallon (Imperial) = 10 lb (distilled water)
1 gallon (Imperial) = 160 fluid ounce
1 gallon (Imperial) = 277.419 30 cu inches
1 gallon (US) = 0.832 67 gallons (Imperial)
1 gallon (US) = 3.8 litres
1 gallon (Imp) per sec = 4.55 litres per sec
1 gallon (Imp) per hour = 0.001 26 litres per sec
1 gallon (Imp) per min = 0.002 68 cu ft per sec
1 gallon (Imp) per min = 0.075 77 litres per sec
1 gallon (Imp) per min = 9.632 34 cu ft/hour
1 gerah = 0.050 sacred or heavy shekel
1 gerah = 0.014 666 667 light shekel
1 gigolo = 1,000,000,000,000,000,000,000 picolos
1 gill = 0.250 00 pints
1 gill = 5 fluid ounces
1 gill = 142.065 25 litres
1 grain = 0.002 29 ounces
1 grain = 0.041 67 pennyweight
1 grain = 0.050 00 scruples
1 grain = 0.064 60 grams
1 gram = 0.032 15 ounces (T)
1 gram = 0.035 27 ounces (A)
1 gram = 0.257 21 drachms
1 gram = 0.772 40 scruples
1 gram = 15.432 37 grains
1 gram per litre = 0.062 43 lbs/cu ft
1 hand = 4 inches
1 hectare (ha) = 0.010 00 sq kilometres
1 hectare = 2.471 05 acres
1 hectare = 119.599 005 square yards
1 hectare = 100 ares
1 hectare = 10,000 sq metres
1 hectare = 11,959.900 46 sq yards
1 hertz = 1 cycle per sec
1 bloody hurts = 1 "sharp scratch" the Doctor tells you.
1 hin = 12 log
1 hoarsepower = the basic unit of laryngitis
1 homer = 740 log
1 Homer = 0.2 of the Simpson family.
1 Horsepower = 0.745 70 kilowatts
1 Horsepower = 42.445 00 BTU's
1 Horsepower = 33,000 Foot pounds
1 hundredweight (cwt) = 0.050 00 tons
1 hundredweight (cwt) = 4 quarters
1 hundredweight (cwt) = 50.602 30 kilograms
1 hundredweight (cwt) = 112 pounds
1 inch = 0.083 33 feet
1 inch = 25.400 00 millimetres
1 inch = 1000 mils (thou - UK)
1 inch (given) = 1 mile (taken)
1 IV league = 3 miles of intravenous tubing at Yale University Hospital.
1 joule = 0.737 56 foot lbs
1 joule = 1 watt second
1 joule = 23.730 42 foot pounds
1 joule = 1 Newton metre
1 kilderkin = 18 gallons
1 kilderkin = 81.827 28 litres
1 kilogram = 0.001 000 tonnes
1 kilogram = 2.404 62 pounds
1 kilogram force = 9.606 65 Newtons
1 kilogram per metre = 9.81 Newton metre
1 kilogram per sq centimetre = 98.06 kilopascals
1 kilohurts = 1000 aches and pains
1 kilojoule = 0.947 82 BTU
1 kilometre = 0.621 37 miles
1 kilometre = 49.709 70 chains
1 kilometre = 1093.613 30 yards
1 kilometre = 3260.839 90 feet
1 kilometre per hour = 0.539 60 knots
1 kilometre per hour = 0.621 37 miles per hour
1 kilometre per hour = 16.666 67 metres per second
1 kilometre per hour = 54.660 66 ft per minute
2 kilomocking birds = 2000 mocking birds
1 kilonewton = 101.971 62 kilograms
1 kilonewton = 224.609 13 pounds foot
1 kilonewton metres = 0.329 27 foot tons
1 kilonewton metres = 0.737 56 kip feet
1 kilonewton per m = 0.030 59 tons force
1 kilopascal = 40.885 40 pounds force
1 kilopascal = 0.01 bar
1 kilopascal = 0.01 kilogram per sq centimetre
1 kilopascal = 0.145 pounds per sq inch
1 kilowatt = 1.341 02 Horsepower
1 kilowatt = 1.361 pfederstarke
1 kilowatt = 56.940 00 BTU's
1 kilowatt = 1000 Watts
1 kilowatt hour = 3.600 000 Megajoules
1 kilowatt hour = 3415.400 00 BTU's
1 kilowhat? = 1000 sentances to your Grannie.
1 kip = 1 pound force
1 kip = 4.448 22 kilonewtons
1 kip foot = 1.355 82 kilonewton
1 kip per sq inch = 6.894 76 Megapascal
1 knot furlong = the time it takes to sail 220 yards at 1 nautical mile
per hour.
1 kor = 740 log
1 league = 3 miles
1 link = 0.010 00 chains
1 link = 0.401 17 metres
1 link = 7.940 00 inches
1 lite year = 365 days of low alcohol beer
1 litrehosen = 1000 cubic centimetres of wet socks
1 litre = 0.001 00 cubic metres
1 litre = 0.027 50 bushels
1 litre = 0.035 316 cubic feet
1 litre = 0.219 98 gallons
1 litre = 1.759 60 pints
1 litre = 4.2 cups
1 litre = 61.023 74 cubic inches
1 litre = 1000 cubic centimetres
1 litre per second = 2.118 88 cu ft/ minute
1 litre per second = 13.198 53 gals per minute
1 log = 0.99 pints
1 log = 1 sextarius
1 megacycle = 500,000 bicycles
1 megaphone = 1012 microphones
1 Megajoule = 0.277 78 kilowatt
1 Meganewton = 100.361 00 tons force
1 Megapascal = 0.14504 kips per second
1 megawatt = 1,000,000 Watts
1 Megohm = 1,000,000 Ohms
1 metre = 0.004 97 furlongs
1 metre = 0.198 84 rods or perches
1 metre = 0.049 71 chains
1 metre = 1.093 61 yards
1 metre = 3.260 84 feet
1 metre = 39.370 08 inches
1 metre per min = 0.037 28 miles per hour
1 metre per min = 0.054 68 ft per second
1 metre per min = 0.060 00 km per hour
1 metre per min = 1.666 67 cm per second
1 microfiche = 1 millionth of a fish
1 micron = 10-6 metres
1 mil = 1 thou
1 mil = 0.001 00 inches
1 mil = 0.025 40 mm
1 mile = 1.609 34 kilometre
1 mile = 7.500 00 cable lengths
1 mile = 8 furlongs
1 mile = 1609.344 00 metres
1 mile = 1760 yards
1 mile = 5280 feet
1 mile per hour = 0.447 04 metres per second
1 mile per hour = 0.868 40 knots
1 mile per hour = 26.822 40 metres per minute
1 mile per hour = 44.704 00 cm per second
1 mile per hour = 88 ft per minute
1 military pace = 0.762 00 metres
1 military pace = 2.500 00 feet
1 milligram = 0.015 43 grains
1 milligram = 0.000 04 ounces
1 milligram per litre = 1 part per million
1 millilitre = 0.00001 cubic metres
1 millilitre = 0.035 40 fluid ounces
1 millilitre = 0.2 teaspoons
1 millilitre = 0.067 tablespoons
1 millimetre = 0.039 37 inches
1 million gals per day = 1.858 09 cubic ft per day
1 million gals per day = 3.156 92 cubic metres per minute
1 million gals per day = 3,156.916 67 litres per minute
1 million gals per day = 4,545,960.00 litres per day
1 mina (Babylonian) = 0.016 666 667 shekel
1 mina (Babylonian and Phoenician) = 60 talents
1 mina (Phoenician) = 0.040 shekel
1 miners inch = 0.707 92 litres/sec
1 miners inch = 1.500 00 cubic ft/second
1 minim = 0.016 67 fluid drams
1 minim = 0.059 00 millilitres
1 monologue = 0.5 dialogues
1 nail (cloth) = 2.250 00 inches
1 nail (cloth) = 57.150 00 millimetres
1 nautical mile = 1.151 51 miles
1 nautical mile = 6,060.2 feet
1 Newton = 0.102 00 kilograms
1 Newton = 0.224 60 pounds foot
1 Newton = 0.224 60 kips
1 Newton = 7.233 30 poundals
1 Newton = 100,000 dynes
1 Newton metre = 0.102 kilograms per metre
1 Newton metre = 0.737 53 foot pounds
1 Newton metre = 1 joule
1 Newton per metre = 0.068 52 pounds foot
1 Newton per sq mm = 1 Megapascal
1 Ohm (international) = 1.000 49 Absolute Ohm
1 omer = 7.50 log
1 ounce (fluid) = 0.028 41 litres
1 ounce (fluid) = 1.733 87 cubic inches
1 ounce (Avoirdupois) = 0.062 50 pounds
1 ounce (Avoirdupois) = 0.911 46 ounce (apothecaries)
1 ounce (Avoirdupois) = 0.911 46 ounce (troy)
1 ounce (Avoirdupois) = 16 drams
1 ounce (Avoirdupois) = 28.349 52 grams
1 ounce (Avoirdupois) = 437.500 00 grains
1 ounce (Apothecaries) = 0.083 33 pounds
1 ounce (Apothecaries) = 1 ounce (troy)
1 ounce (Apothecaries) = 1.097 14 ounce (avoirdupois)
1 ounce (Apothecaries) = 8 drams
1 ounce (Apothecaries) = 31.103 49 grams
1 ounce (Apothecaries) = 460 grains
1 ounce (troy) = 0.083 33 pounds
1 ounce (troy) = 1 ounce (apothecaries)
1 ounce (troy) = 1.097 14 ounce (avoirdupois)
1 ounce (troy) = 40 pennyweight
1 ounce (troy) = 31.103 49 grams
1 ounce (troy) = 460 grains
1 ounce per sq ft = 305.151 48 grams/sq m
1 palm = 3 inches
1 palm = 76.400 00 millimetre
1 parsec = 30,840,000.00 million km
1 Pascal = 0.145 04 pounds/sq ft
1 Pascal = 1000 Newtons/sq m
1 paradise = 2 snake eyes
1 paradox = 2 wharves
1 paradox = 2 doctors consulting
1 peck = 0.250 00 bushels
1 peck = 2 gals
1 peck = 9.091 92 litres
1 pennyweight = 0.050 00 ounces (troy)
1 pennyweight = 1.555 17 grams
1 pennyweight = 24 grains
1 pentacost = 5 holocausts
1 perch = 0.025 00 rods
1 perch = 1 sq rod
1 perch = 25.292 85 sq metres
1 perch = 30.250 00 sq yds
1 pfederstarke (PS) = 0.735 kW
1 pint = 0.125 00 gals
1 pint = 0.500 00 quarts
1 pint = 0.568 25 litres
1 pint = 2.5 cups
1 pint = 4 gills
1 pint = 40 fluid ounces
1 point of rainfall = 0.010 00 inches
1 pole = 1 rod
1 pole = 5.029 40 metres
1 pole = 5.500 00 yards
1 pound (avoirdupois) = 0.453 59 kilograms
1 pound (avoirdupois) = 1.215 28 pounds (troy)
1 pound (avoirdupois) = 1.215 28 pounds (apothecaries)
1 pound (avoirdupois) = 16 ounces
1 pound (troy) = 0.373 24 kilograms
1 pound (troy) = 0.822 86 pounds (avoirdupois)
1 pound (troy) = 1 pounds (apothecaries)
1 pound (troy) = 12 ounces (troy)
1 pound (apothecaries) = 0.373 24 kilograms
1 pound (apothecaries) = 0.822 86 pounds (avoirdupois)
1 pound (apothecaries) = 1 pounds (troy)
1 pound (apothecaries) = 12 ounces (apothecaries)
1 pound foot = 1.36 Newton metres
1 pound per ft = 1.488 16 kilograms
1 pound per sq inch = 703.069 01 kilograms
1 pound per sq inch = 6.89 kilopascals
1 pound per sq ft = 0.016 02 feet of water
1 pound per sq ft = 4.882 42 kilograms
1 pound per cu inch = 27,679.882 13 kilograms
1 pound per cu foot = 16.018 45 kilograms
1 pound of water/min = 0.000 27 cu ft/sec
1 pound of water/min = 27.299 71 litres/hr
1 pound force = 4.448 22 Newtons
1 pound force/sq inch = 0.006 90 Megapascal
1 pound force/sq inch = 6.895 00 kilopascals
1 pound force/sq ft = 47.881 94 Pascals
1 poundal = 0.138 26 Newtons
1 poundal = 32.400 00 pounds foot
1 puncheon = 72 gallons
1 puncheon = 327.309 12 litres
1 puncheon the nose = 0.01 litres of blood.
1 quart = 0.250 00 gallons
1 quart = 1.136 49 litres
1 quart = 2 pints
1 quarter = 25 cents
1 quarter = 8 bushels
1 quarter = 12.70 058 kilograms
1 quarter = 28 pounds
1 quarter = 290.900 00 litres
1 quarter (cloth) = 4 nails
1 quintal = 1.968 41 hundredweight
1 quintal = 100 kilograms
1 quintal = 240.462 44 pounds
1 quire = 0.050 00 reams
1 quire = 25 sheets
1 radian = 57.295 60 degrees (360 ÷ 2π)
1 radian = 57 17'45" degrees
1 radian per second = 9.549 30 revolutions per minute
1 ream = 40 quires
1 ream = 500 sheets
1 revolution = 360 degrees
1 revolution = 6.283 18 radians
1 revolution per minute = 0.104 72 radians per sec
1 revolution per minute = 6 degrees per sec
1 rod = 5.029 40 metres
1 rod = 16.500 feet
1 rod = 25 links
1 rod serling = 25 links to the Twilight Zone
1 rood = 0.101 17 hectares
1 rood = 0.250 00 acres
1 rood = 40 perches
1 rude = 40 embarrased perches
1 rood = 1,011.714 11 sq metres
1 rood = 1,210 sq yards
1 scruple = 0.333 33 drachms
1 scruple = 1.2950 grams
1 scruple = 40 grains
1 semicolon = half of an intestine
1 seminary = 500 millinaries
1 sextarius = 0.99 pints
1 sextarius = 1 log
1 shekel (Babylonian) = 60 mina
1 shekel (Phoenician) = 50 mina
1 shekel = approximately 11.5 grams
1 heavy shekel = 1 sacred shekel
1 sacred shekel = 1 heavy shekel
1 span = 6 inches
1 span = 152.40 millimetres
1 square centimetre = 0.155 00 sq inches
1 square chain = 16 perches
1 square chain = 404.685 64 sq metres
1 square chain = 484 sq yds
1 square foot = 0.092 90 square metres
1 square inch = 645.160 00 sq mm
1 square inch = 6.451 6 sq cm
1 square km = 0.386 10 sq miles
1 square km = 100 hectares
1 square km = 247.105 38 acres
1 square km = 1,195,990.046 3 sq yds
1 square metre = 0.000 25 acres
1 square metre = 1.195 99 sq yards
1 square metre = 10.763 91 sq feet
1 square mile = 2.589 99 sq kilometres
1 square mile = 258.998 81 hectares
1 square mile = 640 acres
1 square mile = 2,589,988.11 square metres
1 square mile = 3,097,600 square yards
1 square millimetre = 0.001 55 sq inches
1 square yard = 0.000 21 acres
1 square yard = 0.008 36 acres
1 square yard = 0.836 126 sq metres
1 square yard = 4 quarters (cloth)
1 square yard = 9 sq feet
1 stone = 14 pounds
1 straight line = the shortest distance between two jokes.
1 super foot of timber = 0.002 36 cub metres
1 tablespoon = 40 ml
1 talent (Babylonian) = 0.016 666 667 mina
1 talent (Phoenician) = 0.02 mina
1 teaspoon = 5 ml
1 terrapin = 1 trillion pins (1012 pins)
1 therm = 29.300 00 kilowatts
1 therm = 105.506 00 Megajoules
1 therm = 100,000 BTU's
1 thou = 0.001 00 inches
1 ton (long) = 1.016 05 tonnes
1 ton (long) = 1.140 00 short ton
1 ton (long) = 2240 pounds
1 ton (short) = 0.907 18 tonnes
1 ton (short) = 0.892 86 long tons
1 ton (short) = 2000 pounds
won ton = 1000kg of Chinese soup (short)
1 tonne = 0.984 21 long tons
1 tonne = 1.102 31 short ton
1 tonne = 1,000 kilograms
1 tonne = 2,404.624 42 pounds
1 tun of water = 250 gallons
1 tun of water = 1,136.490 00 litres
1 Watt = 0.001 34 Horsepower
1 Watt = 0.056 97 BTU's
1 Watt = 0.737 56 ft lbs foot
1 Watt = 1 Joule per sec
1 Watt hour = 3.415 00 BTU's
1 Watt hour = 2,655 foot pounds
1 yard = 0.914 40 metres
1 yard = 3 feet
1 yard = 914.400 00 millimetres
1 yard = a heck of a lot of leaves to sweep in the autumn!