 # Standard Units

You are probably familiar with a lot of these measurements. Volume is about how much space a fluid takes up. Even though they have different weights, a gallon of water weighs a different amount than a gallon of motor oil. Notice that fluid ounces are different than the ounces used in weights.

1 tablespoon = 3 teaspoons
1 fluid ounce = 2 tablespoons = 6 teaspoons
1 cup = 8 fluid ounces = 16 tablespoons = 48 teaspoons
1 pint = 2 cups = 16 fluid ounces = 32 tablespoons
1 quart = 2 pints = 4 cups = 32 fluid ounces = 64 tablespoons
1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces

# Metric Units

The basis of fluid volume units for the metric system is the liter. A liter is about the same as one quart. You already read that the metric system is based on units of ten so here's a starter list, but they go on forever.

1 liter = 1,000 milliliters

That's about it for the main units of fluid volume. There are deciliters and other metric volumes, but in class you'll use milliliters and liters most often.

# Conversion

You're going to have to go back and forth with units. Converting fluid ounces into milliliters and gallons into liters is a regular thing in math and science classes. Here are a few conversions. Technically you only need one conversion, but sometimes it's easier to use one closer to the values you want.

1 fluid ounce = 29.57 milliliters
1 pint = 0.47 liters = 470 milliliters
1 quart = 0.95 liters = 950 milliliters
1 gallon = 3.78 liters = 3,780 milliliters

1 milliliter = 0.03 fluid ounces
1 liter = 1,000 milliliters = 2.11 pints
1 liter = 1.06 quarts
1 liter = 0.26 gallons

# Example

If you were sent to the store to buy 5 2-liter bottles of soda for a party, how many gallons of soda is that?
5 * 2 liters = 10 liters = 10 * 0.26 gallons = 2.6 gallons of soda

► NEXT PAGE ON PREALGEBRA

► Or search the sites...  