Billion Facts, Mysteries & Curiosities

Useful Exact Volume Relationships

1 fluid ounce = (1/8) cup = (1/16) pint = (1/32) quart = (1/128) gallon
1 gallon = 128 fluid ounces = 231 inches3 = 8 pints = 4 quarts
1 quart = 32 fluid ounces = 4 cups = 2 pints = (1/4) gallon

Useful Exact Length Relationships

1 cup = 8 fluid ounces = (1/2) pint = (1/4) quart = (1/16) gallon
1 mile = 63360 inches = 5280 feet = 1760 yards
1 yard = 36 inches = 3 feet = (1/1760) mile
1 foot = 12 inches = (1/3) yard = (1/5280) mile
1 pint = 16 fluid ounces = (1/2) quart = (1/8) gallon
1 inch = 2.54 centimeters = (1/12) foot = (1/36) yard
1 liter = 1000 centimeters3 = 1 decimeter3 = (1/1000) meter3

Note that when converting volume units:
1 foot = 12 inches
(1 foot)3 = (12 inches)3 (cube both sides)
1 foot3 = 1728 inches3
The linear & volume relationships are not the same!

Useful Exact Area & Length Relationships

acre = (1/640) miles2
mile = 1760 yards = 5280 feet
yard = 3 feet = 36 inches
foot = 12 inches
inch = 2.54 centimeters

Note that when converting area units:
1 foot = 12 inches
(1 foot)2 = (12 inches)2 (square both sides)
1 foot2 = 144 inches2
The linear & area relationships are not the same!