Unit Price Checker by CostInflation

Compare package sizes and multipacks by unit price. Save comparisons and explore dated category prices across U.S. cities.

Compare package prices in a common unit, with your shopping page still in view. Unit Price Checker helps you compare different sizes and multipacks, save your work, and explore CostInflation category price history. COMPARE THE WHOLE OFFER Enter the total price, amount per pack, unit and number of packs. Compare price per ounce, pound, gram, kilogram, litre, fluid ounce or a matching count unit. Weight, volume, count types and currencies stay in their own comparison groups. See the lowest unit price, ties and the percentage difference for each comparable option. BRING PRODUCTS INTO ONE WORKSPACE Choose Read this page, use the toolbar or keyboard shortcut, or select product text and use the context menu. On compatible product pages, the extension proposes details for you to review and edit before adding an item. Manual entry is available whenever you need it. Compare up to eight items from different tabs. KEEP YOUR COMPARISONS Your current workspace is saved on this device as you edit. Save up to 20 named comparisons, reopen them, undo a workspace replacement, or export a comparison as a CSV file. Choose the currency and display unit that fit the items you are comparing. Currency selection labels and groups prices; it does not convert exchange rates. EXPLORE CATEGORY PRICE HISTORY Choose a covered category and U.S. city to see CostInflation prices in USD, their observation dates and the category's standard quantity. Explore the dated history and follow the link to its evidence page. PRIVACY AND CONTROL Page reading happens when you invoke it. Product details, cleaned page links, comparisons and preferences stay in your local Chrome profile. The extension has no account, advertising, analytics or affiliate links. An optional category lookup requests public data from CostInflation; it sends the category identifier and ordinary connection metadata, without sending your product details, entered prices or shopping-page links. Clear all data removes the extension's local workspace, saved comparisons, preferences and temporary data. CSV files you export remain your files. Use Alt+Shift+U to invoke the extension, or choose a shortcut in Chrome's extension settings. Chrome 116 or newer is required. Privacy policy: https://costinflation.com/privacy#unit-price-checker Support: contact@costinflation.com