Unit Price Calculator
How it works
Each item's price per unit is just its price divided by its quantity — 4 for 16 is 0.25 per unit, 3 for 10 is 0.30 per unit. Whichever number is smaller is the better deal, and the "cheaper by" figure is that gap expressed as a percentage of the pricier item's rate, the same way a shelf tag lets you compare a large and a small pack of the same product.
The "unit" itself is never converted. It is whatever quantity you typed — grams, millilitres, sheets, count — and the calculator assumes both items already share it. Mixing grams on one side with ounces on the other produces a number that looks exactly like a valid comparison and is not one, so the tool would rather do nothing with the unit than guess at it.
Frequently asked questions
Does it convert units for me?
No. The quantity field is a plain number and the "unit" label next to it is only text for the result — the tool never converts grams to ml or ounces to grams for you. Both items must already be entered in the same unit, because a converter that guessed which unit you meant would sometimes guess wrong, and a unit-price comparison that is wrong looks exactly like one that is right.
What if the two pack sizes use different measures entirely?
Convert one of them to match the other first — with the Length or Weight converter, say, if one label is in ounces and the other in grams — then enter both quantities here in that shared unit.
Is this the same as the unit pricing on a shelf label?
Yes, same idea — price divided by quantity — just done for two products side by side instead of read off two separate tags.