Converting pounds to ounces is something that you might need to do when taking a school science class. You may also need to convert a number of pounds to ounces if you are putting together a recipe, or creating a weekly menu for a new diet. Basic multiplication, which you might be able to complete in your head, will allow you to convert pounds to ounces.

Learn the number of ounces in a pound. There are exactly 16 ounces in one pound.

Write out the problem. If you wish to convert four pounds to ounces, multiply the number of pounds by the number of ounces in a pound. The multiplication problem would read "4 times 16" or “4 x 16.”

Find the solution. 4 multiplied by 16 equals 64 (4 x 16 = 64). Therefore, there are 64 ounces in four pounds.