US Standard Volume

These are the most common measurements:

• Fluid Ounces
• Cups
• Pints
• Quarts
• Gallons

Fluid Ounces (fl oz) are small.

About how much would fit into a small medicine cup.

Fluid Ounce!

"Fluid Ounce" is used for volume, "Ounce" for mass, and they are different.

• For example, 1 fluid ounce of honey has a mass of about 1.5 ounces!
• But for water, 1 fluid ounce has a mass of about 1 ounce.

If you mean an ounce of fluid say "fluid ounce" ("fl oz")

Cups

A small glass holds about 8 fluid ounces, which is also called 1 cup.

1 cup = 8 fluid ounces

Here we have 2/3 cup (two-thirds of a cup) of milk, or about 5 fluid ounces

By the way ... you can measure volume using special Measuring Cups ... !

Pints

A pint is equal to 2 cups (example: a large glass of milk!)

1 pint = 2 cups = 16 fluid ounces

 If you were measuring many cups of liquid all put together, you might have to use quarts. A quart (qt) is the same thing as 4 cups or 2 pints.  1 quart = 2 pints = 4 cups = 32 fluid ounces
 If you still need more liquid you may want to switch to using gallons. A gallon (gal) is the same as 16 cups or 8 pints or 4 quarts.  It is the largest liquid measurement. (Note that a quart is a quarter of a gallon!)

In Summary:

1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces

Other Volume Measurements

Cubic Inch

Volume is length by length by length,

so the Cubic Inch is a cube that is 1 inch on each side.

The Unit is written many ways, such as:

• in3
• inch3
• cu in
• cu inch
• cubic inches
• etc ...

Barrel of Oil

1 oil barrel (bbl) is equal to 42 gallons (or about 160 Liters)

More Examples

A fluid ounce is:

• very close to 30 milliliters (metric volume)
• more precisely 29.5735297 milliliters

A pint is: