General
Unit Price Calculator
Compare two products by price per unit to find the better value and see exactly how much you save. Free unit price and cost-per-unit calculator.
Unit Price Calculator
Item A
Item B
Method
How this calculator works
Unit price = total price ÷ quantity. The item with the lower unit price is the better value; savings % = (higher − lower) ÷ higher × 100.
FAQ
Frequently asked questions
What is unit price?
Unit price is the cost of a single unit of measure — per litre, per kilogram, per 100 g, per item. It lets you compare products of different sizes fairly: unit price = total price ÷ quantity.
How do I compare two products of different sizes?
Divide each product's price by its size to get the price per unit, then pick the lower one. This calculator does it for you and shows how much you save.
Is the bigger pack always cheaper per unit?
Not always. Larger packs usually have a lower unit price, but promotions on smaller sizes can beat them. Always check the unit price rather than the sticker price.
What units should I use?
Use the same unit for both items (both in grams, both in litres, or both as a count). The calculator compares whatever quantity you enter, so keep them consistent.
Does the currency matter?
No — the calculator is currency-agnostic. Just enter prices in the same currency for both items and it compares the numbers.
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