About the unit price calculator
Package sizes make prices hard to compare. Enter each item’s price and quantity to see the cost per unit and which is cheaper.
How to use this calculator
- Enter Item A’s price and quantity.
- Enter Item B’s price and quantity, in the same unit.
- See which is cheaper per unit.
Worked examples
- A: $0.25/oz
- B: $0.1875/oz
B is 25% cheaper per ounce.
Measurement guidance
Check the shelf tag
Many stores show unit prices, but sometimes in different units for similar items — this calculator puts them on equal footing.
Frequently asked questions
Is the bigger size always cheaper?
Often, but not always — sales and promotions can reverse it.
Can I compare multipacks?
Yes — use total quantity, like 6 × 12 oz = 72 oz.