Unit Price Calculator
Compare unit prices.
Input
Result
What is a Unit Price Calculator?
A Unit Price Calculator helps you find the cost per unit of a product, making it easy to compare value between different package sizes and brands. It tells you which option gives you the most for your money.
How to calculate unit price manually (the formula)
The formula is: Unit Price = Total Price ÷ Total Quantity. The quantity can be in ounces, grams, liters, or any other consistent unit.
Example calculation
A 16-ounce box of cereal costs $4.80. Unit price = $4.80 ÷ 16 = $0.30 per ounce. A 24-ounce box costs $6.00. Unit price = $6.00 ÷ 24 = $0.25 per ounce. The larger box is the better value.
Common mistakes
- Comparing different units — Always convert to the same unit before comparing. Compare price per ounce to price per ounce, not per pound.
- Forgetting about usage — A larger package may have a lower unit price, but only if you will actually use it all before it spoils.
- Ignoring quality differences — Unit price helps with cost, but brand and quality differences matter too.
Frequently asked questions
How do I calculate unit price?
Divide the total price by the total quantity. Unit Price = Total Price ÷ Total Quantity.
How do I compare unit prices between two products?
Calculate the unit price for each product, then compare. The lower unit price gives you the better value.
What units should I use for unit price?
Use consistent units for both products — ounces, grams, liters, or count. The calculator works with any unit you choose.
Is a lower unit price always better?
Usually yes, but also consider quality, freshness, and whether you will use the larger quantity before it expires.
Is this calculator free?
Yes, completely free with no sign-up required.