Free unit price calculator — compare which grocery pack is the cheapest per gram, kg, liter, or unit.
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The QuickToolz Unit Price Calculator answers the most useful question in any grocery aisle: which pack is actually the cheapest? Enter the price and size of two or more products and instantly see the price per gram, kilogram, liter, milliliter, or unit. Stop being tricked by bigger-pack marketing.
Comparing pasta, rice, sugar, or flour by price-per-kg
Comparing oil, juice, or detergent by price-per-liter
Comparing diapers, batteries, or toilet paper by price-per-unit
Bulk buying decisions (Costco-style large packs vs small)
Retailers often display attractive total prices on large packs, but per-unit math sometimes reveals smaller packs are cheaper — especially when smaller sizes are on promotion. This calculator does the math instantly so you always pick the best deal.
Everything you need, nothing you don’t. Built for speed and simplicity.
Grams, kilograms, ounces, pounds, milliliters, liters, or count.
Compare more than two products at once.
Live unit price as you type.
Everything you need, nothing you don’t. Built for speed and simplicity.
Type the price and pack size of product A.
Got questions? We’ve got answers. Common questions about Unit Price Calculator.
The cheapest pack is automatically flagged.
Repeat for product B (and optionally C, D…).
The cheapest per-unit pack is highlighted instantly.
Compare prices
Find the best deal — price per unit, side by side.
Best deal
Lowest price per oz.