Unit Price Calculator
Enter two prices and sizes to see the real price per unit, so the bigger box only wins when it's actually cheaper.
How it works
For each option, divide the price by the size to get a price per unit — per ounce, per sheet, per pound, whatever you type in. The lower number is the better deal, and the calculator highlights it so you don't have to squint at the shelf tag.
Keep the units the same on both sides for a fair fight. If one is in ounces and the other in pounds, convert first, or the comparison won't mean anything.
Bigger isn't automatically cheaper. Family sizes sometimes carry a premium, and a sale on the small pack can flip the math — which is exactly the moment this comparison earns its keep.
Frequently asked questions
How do I compare two package sizes?
Divide each item's price by its size to get price per unit, then pick the smaller number. Enter both prices and sizes and the calculator marks the cheaper one and shows roughly how much you save.
Does the bigger size always cost less per unit?
Not always. Larger packages usually cost less per unit, but not when the small size is on sale or the big one carries a bulk premium. Running the numbers is the only way to be sure.
What units should I enter?
Use whatever matches the products — ounces, grams, sheets, pods, or count. The one rule is to use the same unit for both options so the two price-per-unit figures line up.
What if the sizes are listed differently?
Convert them to a common unit first. Turn pounds into ounces, or liters into milliliters, so both entries speak the same language before you compare.