1 acre = 0.405 hectare
1 hectare = 2.47 acres
1 acre = 43,560 square feet
1 acre = 4840 square yards

1 bushel (dry) = 1.244 cubic feet
1 bushel (dry) = 2150 cubic inches
1 bushel (dry) = 35.24 liters
1 bushel (dry) = 4 pecks
1 bushel (dry) = 32 quarts

1 cubic foot = 0.804 bushel
1 cubic foot = 25.714 quarts (dry)
1 cubic foot = 29.922 quarts (liquid)
1 cubic foot = 1728 cubic inches
1 cubic foot = 7.481 gallons

1 cubic inch = 16.39 cubic centimeters
1 cubic inch = 0.554 ounces (fluid)

1 cubic yard = 27 cubic feet
1 cubic yard = 46,656 cubic inches
1 cubic yard = 202 gallons
1 cubic yard = 764.5 liters

 1 gallon = 3785 cubic centimeters
1 gallon = 231 cubic inches
1 gallon = 0.1337 cubic feet
1 gallon = 3.785 liters
1 gallon = 128 fluid ounces

1 inch = 2.54 centimeters

1 kilogram = 35.274 ounces
1 kilogram = 2205 pounds

1 liter = 33.81 ounces (fluid)
1 liter = 1.816 pints (dry)
1 liter = 2.11 pints (liquid)
1 liter = 61.025 cubic inches
1 liter = 0.264 gallons

1 meter = 39.37 inches

1 mile = 5280 feet
1 mile = 1760 yards

1 mile per hour = 1.467 feet per sec

 1 ounce (avoirdupois) = 28.349 grams
1 ounce (fluid) = 29.574 cubic centimeters
1 ounce (fluid) = 1.805 cubic inches

1 pound = 453.59 grams
1 pound = 16 ounces

1 quart (dry) = 67.20 cubic inches
1 quart (liquid) = 57.75 cubic inches

1 rod = 16.5 feet
1 rod = 5.029 meters
1 rod = 5.5 yards

1 square foot = 144 square inches
1 square yard = 9 square feet

1 ton (short) = 907.185 kilograms
1 ton (short) = 2000 pounds
1 ton (long) = 2240 pounds

1 yard = 91.440 centimeters
1 yard = 3 feet