Shrinkflation Calculator
Reveal hidden price increases when products get smaller but the price stays the same.
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Shrinkflation is when manufacturers reduce the size of a product while keeping the price the same (or raising it). This calculator reveals the true price increase hidden by the smaller package. Here is how to use it:
- Select a preset to see a real-world example, or enter a custom product.
- Enter the old and new sizes. Check the package label for the net weight or count. The old size may be visible on shopping comparison sites or consumer reports.
- Enter the unit (ounces, grams, sheets, count, etc.).
- Enter the price (optional). This lets the calculator show the price-per-unit change and the annual cost impact.
- Read the result. The effective price increase shows how much more you are paying per unit of product, expressed as a percentage.
About Shrinkflation
Shrinkflation has accelerated since 2020, with hundreds of consumer products quietly reducing package sizes. Common categories include snack foods, beverages, paper products, cleaning supplies, and personal care items. Manufacturers prefer shrinking packages to raising prices because consumers are more sensitive to price changes than quantity changes.
Why This Matters
Shrinkflation does not show up in your grocery receipt because the price per item may not change. But the price per ounce or per sheet increases, meaning you are getting less value. A 6.5% size reduction at the same price is actually a 7% effective price increase per unit. Over a year of weekly purchases, that can add up to $50-100+ for a single product. This calculator helps you see through the packaging to the real cost.
Frequently Asked Questions
What is shrinkflation?
Shrinkflation is the practice of reducing the size, weight, or quantity of a product while keeping the price the same or increasing it. For example, a bag of chips going from 10 oz to 9 oz at the same $4.99 price. The term combines "shrink" and "inflation" because the effect on consumers is the same as a price increase.
How do you calculate the real price increase from shrinkflation?
Divide the old size by the new size, subtract 1, and multiply by 100 to get the effective price increase percentage. For example: 10 oz to 9 oz = (10/9 - 1) x 100 = 11.1% effective price increase. This is higher than the 10% size reduction because you need to buy more of the smaller package to get the same amount.
What products have experienced shrinkflation?
Common examples include Doritos (15.5 to 14.5 oz), Gatorade (32 to 28 oz), Tillamook ice cream (56 to 48 oz), various cereal brands (reduced by 1-2 oz), paper towels (fewer sheets per roll), and toothpaste (reduced tube sizes). The trend has been documented across snack foods, beverages, household goods, and personal care products.
Is shrinkflation included in the CPI?
Yes, the Bureau of Labor Statistics adjusts for quantity changes when calculating the Consumer Price Index. If a product shrinks, the BLS records it as a price increase per unit. However, individual consumers may not notice the change on their receipt because the sticker price did not change. This calculator helps you see the per-unit impact that the CPI captures but your receipt does not show.