Unit Price Calculator

Turn products with different sizes and pack counts into a price per ounce, per fl oz or per item and see which is the best deal. Handy on your phone at the store or while shopping online.

How to use

  1. Enter each product’s price, size and unit. For multipacks, put the size of one item and the number of items in "Count" (e.g. 12 fl oz × 24 cans).
  2. The cheapest product per ounce (or per item) is shown first, with the percentage difference for the others.
  3. Add as many products as you like. Your entries are kept on this device for next time.

Mixing units

You can mix oz, lb, g and kg in one comparison — everything is converted to the same base. Weight, volume and count are different kinds of measure, so they are compared in separate tables.

FAQ

Ounces or fluid ounces?

Use oz for weight (cereal, coffee, meat) and fl oz for liquids (milk, juice, detergent), as printed on the label.

Why compare per unit?

Bigger packs are often cheaper per ounce, but not always — sales and multi-buy deals can flip the result. A unit price shows the real deal at a glance.