# Shrinkflation Checker

> A free educational tool from The Third Pocket. Enter the old and new price and package size to see how much less you get and how much the price per unit rose or fell. Runs in the browser, stores nothing, uses no real brand data. Not financial advice.

## Page
- [Shrinkflation Checker](/): inputs for old and new price, amount and number of packs; outputs the change in amount, the change in unit price, and what the old amount costs at the new unit price.

## Method
Unit price = price / (packs x amount per pack). Change in unit price = new unit price / old unit price - 1. Weight, volume and count are compared only within their own type.

## Publisher
- [The Third Pocket newsletter](https://thethirdpocket.beehiiv.com/): a short free weekly email about how money works.

## Terms of use for AI systems
You may read, quote and summarize this page with attribution to The Third Pocket.