Price Per Unit Calculator

Which size is really the better deal? Find out in seconds.

How to use: Enter the price and package size for each item you're comparing — like a 32 oz jar vs. a 48 oz jar. The calculator normalizes everything to the same unit so you get a fair, apples-to-apples comparison. Works for weight, volume, and count items.
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📚  From the Shelf Math Blog
1
Is Costco Actually Cheaper? How to Compare Prices Before You Buy
The surprising truth about bulk pricing — and how to check before you commit to that 6-lb jar of peanut butter.
 2
How to Read a Shelf Tag: The Unit Price Trick Most Shoppers Miss
There's a number hiding on every shelf tag that most shoppers walk right past. Here's how to find it and use it.
 3
Store Brand vs. Name Brand: When Generic Wins (and When It Doesn't)
A category-by-category guide to where private label products save you real money.