Shopping & Deals
Price Per Unit Calculator
Compare the price per unit of two products to quickly see which size or brand is the better value.
Product A
$
Product B
$
$0.42 / oz
Product A
$0.37 / oz
Product B
Make sure both products use the same unit (e.g. both in ounces) for an accurate comparison.
How the Price Per Unit Calculator works
Enter the price, quantity, and unit for two products. The calculator divides each price by its quantity to find the cost per unit, and highlights whichever product is the better value.
Frequently asked questions
Why do the units need to match?
Comparing $5 for 12 oz against $7 for 1 lb only works if both are converted to the same unit first — otherwise the comparison isn't accurate.
Can I compare more than two products?
This tool compares two at a time — run it again with a third product against whichever one won the first comparison.
Guides that cover this
How to Actually Tell If You're Getting a DealDiscount math, unit pricing, and subscription costs — the arithmetic retailers rely on you not doing.Comparing Unit Prices When Packages Use Different UnitsHow to convert two packages priced in different units (ounces vs. grams, for example) to a common unit for a fair price comparison.Why the 'Bigger' Package Wasn't Actually the Better DealWhy a larger package doesn't automatically have a lower unit price, and the specific situations where it doesn't.Unit Price vs. Total Price: Why Unit Price Is the Fairer ComparisonWhy comparing total price alone between two differently sized packages is misleading, and why unit price is the more reliable metric.How to Use the Price Per Unit CalculatorA quick walkthrough of comparing two or more package prices to find the better per-unit deal.Price Per Unit Calculator: How It Works and How to Use ItA quick guide to the price per unit calculator — what it calculates, how the math works, and tips for getting an accurate result.