Unit Price Calculator

Compare products by cost per unit — not just sticker price

What is this? Bigger isn't always cheaper. Unit price (cost per oz, lb, g, ml, or per item) reveals the true value. This calculator compares multiple products at once so you can instantly see which gives you the most for your money.

The insight: Grocery stores intentionally make larger sizes look cheaper by absolute price. Unit price cuts through the marketing.

Who it's for: Anyone who wants to save money on groceries, household goods, or bulk purchases.
Products to Compare (up to 6)
ProductPrice ($)SizeUnitPer Unit
Best Value
WINNER
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Unit prices are estimates based on entered data. Check actual product labels for exact weights/volumes.

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We may earn a commission if you click above. Calculator is free to use.

Frequently Asked Questions

How do I calculate unit price?

Unit price = Total price / Number of units. For example, a 24-pack of soda at $4.80 has a unit price of $0.20 per can. Always compare unit prices when shopping — larger packages aren't always cheaper.

Is buying in bulk always cheaper?

No. Warehouse clubs and bulk packaging often seduce you into spending more total money. Calculate the per-unit cost and compare. Also factor in: do you actually use it before it expires? Will you have storage space?

What unit prices are worth comparing?

Always compare: toilet paper (per sheet, not per roll), detergent (per load), coffee (per ounce), groceries (per ounce/per gram), and anything where brands offer multiple sizes. Apps like Unitify do this automatically by scanning barcodes.