Unit Price Calculator
Never overpay for groceries again. Instantly compare the "Price Per Unit" of different package sizes to find the true best deal.
Find the True Cost of Your Shopping
Retailers use clever packaging tricks to confuse consumers. Is the "Family Size" cereal box actually cheaper per ounce than the regular box? Is the 6-pack of soda a better deal than the 2-liter bottle? Our Unit Price Calculator cuts through the marketing noise to show you the only number that matters: the cost per unit.
What is Unit Pricing?
**Unit Pricing** identifies the cost of a single unit of measure for a product. Instead of looking at the sticker price ($5.99 vs $8.99), you look at the standardized cost ($0.50/oz vs $0.45/oz).
This is the most powerful tool a shopper has to fight inflation. By strictly buying the lowest unit price items, you can often reduce your grocery bill by 20-30% without buying less food.
How to Use This Tool
When you are standing in the aisle with two products in your hand:
- Step 1: Enter the price of Item A (e.g., $4.50) and its size (e.g., 18 ounces).
- Step 2: Enter the price of Item B (e.g., $6.00) and its size (e.g., 25 ounces).
- Step 3: The calculator will instantly verify which one is the "Best Value" and show you how much you are saving.
Groceries
Compare loose produce vs. bagged produce. Compare big brand cereal vs. store brand. The price per ounce never lies.
Household Goods
Is the 30-roll toilet paper pack actually cheaper per sheet than the 12-roll pack? Often, smaller packs are on nicer sales.
Bulk Buying
Warehouse clubs (Costco, Sam's) require membership fees. Ensure the unit price savings on bulk items justify that annual fee.
Frequently Asked Questions
Can I compare different units (e.g., liters vs gallons)?
To get an accurate comparison, you must convert them to the same unit first. There are roughly 3.78 liters in a gallon. Use our Volume Converter tool if you need to switch between metric and imperial.
Why do stores hide unit prices?
While many states require unit pricing on shelf labels, stores often print them in tiny fonts or use inconsistent units (one tag says "per lb", the next says "per oz") to make mental math difficult.
Does quality matter?
Yes! Unit price only measures quantity vs cost. It does not measure quality. The cheapest paper towel per sheet might be so thin you use three times as much, negating the savings.
Math Accuracy
Calculations are precise. Comparisons assume product quality and utility are equal between the two items.
Data Privacy
We do not store your shopping data. This calculator runs entirely in your browser.