Compare up to 5 products side by side to find the best deal.
Comparing prices at the grocery store can be confusing when products come in different sizes. Our unit price calculator makes it easy: enter the price and quantity for each product, and instantly see the price per unit. The best deal is highlighted in green so you never overpay again.
Unit price is the cost per single unit of measurement (per ounce, per pound, per liter, etc.). It's the fairest way to compare products of different sizes. Simply divide the total price by the quantity to get the unit price.
Is the 500g jar for $4.99 a better deal than the 750g jar for $6.99? Unit pricing answers this instantly: $9.98/kg vs $9.32/kg — the larger jar wins. Supermarkets display unit prices on shelf labels, but they're often in tiny print, missing, or use different units making comparison impossible. This calculator normalizes any product to a standard unit price for easy comparison. It works for groceries (price per kg/lb), beverages (price per liter), bulk items (price per piece), and even services (price per hour). Adding multiple items side by side makes the best deal obvious. Smart shopping is math, and this tool does the math for you.
Usually, but not always. Stores sometimes price smaller sizes at a lower unit cost during promotions, or premium brands have inverted pricing. Always check — assumptions about bulk savings can be wrong 10-15% of the time.
Convert to the same unit first. This calculator normalizes automatically. Comparing price/kg vs price/lb requires conversion (1 kg = 2.205 lb). The tool handles these conversions so you compare apples to apples.
Yes — buying bulk saves money only if you use it all. If you throw away 30% of a bulk purchase, the effective unit price is 43% higher than the label suggests. Buy quantities you'll realistically consume.
Mixed units (one product per kg, another per 100g), small print, and inconsistent labeling are common. Some markets benefit from making comparisons harder. EU regulations require unit pricing on most products; US rules vary by state.
No — unit pricing compares cost, not value. A $3/kg generic brand vs $5/kg premium brand isn't necessarily a worse deal if quality differs significantly. Unit pricing is one factor in purchasing decisions, not the only one.