Compare two products to find the better deal with the Unit Price Calculator. Enter the quantity and total price for Item 1 and Item 2 — the calculator divides each price by its quantity to give you the unit price for both, then highlights which item offers the lower cost per unit.
Better Deal
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Item 1 — Price Per Unit
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Item 2 — Price Per Unit
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Savings Per Unit
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Savings Percentage
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The unit price is the cost per single unit of measurement — for example, per ounce, per pound, per liter, or per item. It lets you compare products of different sizes or quantities on an equal footing so you can identify which offers the best value for money.
The unit price formula is simple: unit price = total price ÷ total quantity. For example, if a 32 oz bottle costs $3.99, the unit price is $3.99 ÷ 32 = $0.1247 per oz. Compare that figure between two products to find the better deal.
For a multi-item package, multiply the number of items by the units per item to get total units, then divide the total price by that number. For example, a 6-pack of 12 oz cans for $5.99 has 72 total oz, giving a unit price of $5.99 ÷ 72 = $0.0832 per oz.
A 12-pack for $6.00 gives a unit price of $6.00 ÷ 12 = $0.50 per can. If each can is 12 oz, the price per ounce is $6.00 ÷ 144 oz = $0.0417 per oz.
Stores often sell the same product in multiple sizes at different price points, making it hard to tell which is cheaper at a glance. The unit price cuts through the noise — a larger pack isn't always cheaper per unit, so calculating cost per unit ensures you're getting the best bang for your buck.
For a fair comparison, both quantities must be expressed in the same unit. Convert one item's quantity to match the other before entering the values — for instance, convert pounds to ounces or liters to milliliters — so the resulting unit prices are directly comparable.
Most supermarket shelf labels display a small unit price (e.g. '12.5¢/oz') beneath the main price. This is calculated the same way — total price divided by total quantity in the displayed unit. You can use this calculator to verify those figures or compare items across different stores.
Not always. While bulk buying often reduces the unit price, promotional sales, coupons, or store-brand pricing can make smaller packages cheaper per unit on any given day. Always calculate the unit price for each option rather than assuming bigger means cheaper.