Enter each product's price and size to compare their true cost per unit and see which is the better value.
Comparing sticker prices alone is misleading when package sizes differ. Dividing each product's price by its size gives a true cost per unit (per ounce, per gram, per item, etc.), which is the only apples-to-apples way to see which package is actually the better deal — the same method used on required grocery store unit-price shelf tags.
Source: Standard unit-price comparison method (price ÷ size), the same calculation basis used on grocery store shelf unit-price labels required in many U.S. states.
Because package sizes differ, the higher sticker price is sometimes the better deal per unit — dividing price by size (unit price) is the only fair way to compare two different package sizes.
Yes — enter both sizes in the same unit (both in ounces, or both in the same count of items, for example) so the resulting unit prices are directly comparable.
Yes — required unit-price shelf tags in many U.S. states use the same price-divided-by-size method this calculator uses, though tags don't always use matching units between different brands, which is why checking it yourself is worthwhile.
Not happy with our calculations or how it works? Let us know.
Have a suggestion for a calculator you don't see here? Let us know.
No calculators match your search.