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Lesson 2: Convert units of measure

# Converting units: US volume

Learn how to convert US Customary units of volume (gallons, quarts, pints, and cups). We see the conversion process using an example of converting 3 and 1/2 gallons into cups, emphasizing the relationships between the units. Created by Sal Khan and Monterey Institute for Technology and Education.

## Want to join the conversation?

• Why does there have to be the U.S customary units? Why can't we all just use the metric? It's a lot easier!
• Probably because US units is important because they are used a lot in the US, and people need to know how to use them effectively, but I agree with you fully
• How do you remember like how many oz go into a lb and all that stuff?
• 16 oz in a lb
8 oz in a cup
2 cups in a pint
4 cups in a quart
16 cups in a gallon
2 pints in a quart
8 pints in a gallon
4 quarts in a gallon
• upvote this if ur hungry for mcdees....
• Any easy way to remember this? A saying or something?
• yes, KHDDCM=King Henry Died Drinking Chocolate Milk. That's how I learned it.
• why does lb stand for pounds??
• The form lb is actually an abbreviation of the Latin word libra, which could mean a pound, itself a shortened form of the full expression, libra pondo, “pound weight”. The second word of this phrase, by the way, is the origin of the English pound.
• the video is very confusing, how am i supposed to remember what he did before the last problems
• i dont get this can someone help me?
• Yes. @Pragya Jha who said this 8 years ago Great Answer
You should be able to remember this;

You should be able to remember by the kingdom of G. Draw a big G (for gallons) inside draw four Q( for quarts) inside of the Q draw two P(for pints) and inside of that draw 2 C (for cups) and inside of the C draw 8 O(for ounces). The story goes something like this, there once was a kingdom G that had 4 queens. Each queen had two princesses. Each princess had two cats. Each cat had 8 Orange balls. The end.
• To clarify product is between point 1125-point 225 it is difficult to see dec point
• A handy trick for remembering the basic metric prefixes is the mnemonic "King Henry Died Until Drinking Chocolate Milk," (or, if you prefer, "King Henry Doesn't Usually Drink Chocolate Milk").
...
See below:
10 km × 105 cm/km =
10 km × 100,000 cm/km =
= 1,000,000 cm. There are 1,000,000 centimeters in our 10 kilometer race.