American and British Units
1 teaspoon = 1/3 tablespoon
1 tablespoon = 1/2 fluid ounce = 3 teaspoons
1 U.S. fluid ounce (fl oz) = 1/128 U.S. gallon = 1/16 U.S. pint
1 imperial fluid ounce (fl oz) = 1/160 imperial gallon
1 gill (gi) = 1/32 gallon = 4 fluid ounces
1 cup = 1/4 quart = 1/2 pint 8 fluid ounces
1 pint (pt) = 1/8 gallon = 1/2 quart = 16 fluid ounces
1 quart (qt) = 1/4 gallon = 32 fluid ounces
1 U.S. gallon (gal) = 231 cubic inches
1 imperial gallon (gal) = 277.4 cubic inches
1 dry pint (dry pt) = 1/64 bushel = 1/2 dry quart
1 dry quart (dry qt) = 1/32 bushel = 1/8 peck 1 peck (pk) = 1/4 bushel
1 U.S. bushel (bu) = 2,150.4 cubic inches
1 imperial bushel (bu) = 2,219.4 cubic inches

Metric Units
1 cubic centimeter (cc) = 1/1,000,000 cubic meter
1 cubic decimeter (cu dm) = 1/1,000 cubic meter = 1,000 cubic decimeters
1 cubic meter (cu m) = 1 stere (s)
1 milliliter (ml) = 1/1,0000 liter = 1 cubic centimeter
1 centiliter (cl) = 1/100 liter = 10 milliliters
1 deciliter (dl) = 1/10 liter
1 liter = 1 cubic decimeter