Tips / Shopping smarter
Reading unit prices
The shelf tag usually shows two prices: what you pay, and the unit price, such as the cost per ounce or per count. The unit price is the one that tells you which option is cheaper.
What to do
- Find the unit price on the tag
- Many stores show it in smaller print on the shelf label, for example "$0.12 per oz".
- Compare the same units
- Sometimes one size is priced per ounce and another per pound or per count. Convert before comparing; 16 ounces equal 1 pound.
- Bigger is not always cheaper
- Sales on smaller sizes can beat the bulk price. Check every time.
- Only bulk-buy what you'll use
- A cheaper unit price on food that spoils before you eat it costs more, not less.
Ask yourself
- Will we finish the larger size before it goes bad?
- Is the tag comparing the same units?
- Is the sale price lower than the regular price of the store brand?
Helpful resources
- Our unit-price calculator
- Compare up to four sizes or brands and see the cheapest per unit.
General information for US households. For food safety, follow FoodSafety.gov and USDA guidance. The Penny Stretcher isn't paid by any store, brand or organization mentioned here.