U.S. Customary Units to Measure Weight

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  • 0:00 U.S. Weight Units
  • 0:40 The Conversions
  • 2:30 Example 1
  • 2:56 Example 2
  • 3:23 Lesson Summary
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Lesson Transcript
Instructor: Yuanxin (Amy) Yang Alcocer

Amy has a master's degree in secondary education and has taught math at a public charter high school.

Watch this video lesson to learn how the U.S. measures weight and how you can convert between them. Learn the conversion numbers that you need for each conversion along with the proper operation.

U.S. Weight Units

How does the United States measure weight? The U.S. weight measurement units are ounces, pounds, and tons. When you go to the post office to mail off a letter or package, the post office will weigh your letter or package in ounces. When you weigh yourself at the gym or at the doctor's, you will see your weight in pounds. When you weigh a car or a big truck, you will see the weight in tons. As you can see, there are units for measuring small things (ounces), medium things (pounds), and large things (tons). Ounces are smaller units than pounds, and pounds are smaller than tons.

The Conversions

To convert between ounces, pounds, and tons, you will need to make use of special conversion numbers. These special conversion numbers come from how many ounces are in a pound and how many pounds are in a ton. There are 16 ounces in 1 pound and 2,000 pounds in 1 ton.

  • 1 pound = 16 ounces
  • 1 ton = 2,000 pounds

Because there are 16 ounces in 1 pound, the conversion number between ounces and pounds is 16. The conversion number between pounds and tons is 2,000 because there are 2,000 pounds in 1 ton. So, how do you use these conversion numbers? Remember this: To convert from larger to smaller, you multiply by your conversion number, and when you convert from smaller to larger, you divide by your conversion number.

So, to convert pounds to ounces, you multiply by 16. To convert ounces to pounds, you divide by 16. To convert from tons to pounds, you multiply by 2,000. To convert from pounds to tons, you divide by 2,000.

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