Free comparison calculator

Unit Price Calculator

Compare package sizes, discounts, and quantities to see which item costs less per unit.

Price per unit
Two-item comparison
Discount support
Best deal result

Compare products

Enter item details

Item A price Item A size Item A quantity Item A discount

Item B price Item B size Item B quantity Item B discount

Unit label

Use the same unit for both products. For multipacks, enter the package size and quantity of packages.

Best deal

Comparison result

Item B is cheaper Save $0.02 per oz

Item A unit price: $0.37 per oz
Item B unit price: $0.35 per oz
Item A total units: 16 oz
Item B total units: 24 oz
Item A final price: $5.99
Item B final price: $8.49

How to calculate unit price

Divide the product price by the total amount in the package. If a 16 ounce item costs $5.99, the unit price is $5.99 divided by 16, or about $0.37 per ounce.

Why unit price matters

Larger packages are not always cheaper. Unit price comparison helps you account for package size, multipacks, and sale discounts before choosing the better deal.

How to compare sale items

Apply any discount first, then divide the discounted price by the total units. This calculator includes a discount field for each item so sale prices can be compared fairly.