Unit Price Calculator

Enter price and quantity with units for up to two items to see which is cheaper per unit.

Enter prices and quantities, then press Calculate

Result

Your result will appear here.

Divide price by quantity to get price per unit, normalizing to comparable units so different package sizes can be fairly compared.

Price per unit = total price ÷ quantity (in comparable units)

$3.49 for 16 oz = $0.218/oz; $5.49 for 32 oz = $0.172/oz - the larger size is cheaper per ounce.

Assumes quality is equivalent. Normalization works best within same product category. 'Each' items are compared as-is.

Check unit price on the shelf tag, but verify you're comparing equivalent products (concentrates vs ready-to-use, different counts).

For general information only.

It takes a few seconds, and every figure is calculated in your browser.

Enter the item 1 price.
Enter the item 1 quantity.
Enter the item 1 unit.
Enter the item 2 price.
Enter the item 2 quantity.
Enter the item 2 unit.
Press Calculate — the result appears in the dark panel beside the form.
Use Copy, CSV, Share or Print under the result if you want to keep it.

What formula does the Unit Price Calculator use?

Price per unit = total price ÷ quantity (in comparable units)

How does the Unit Price Calculator work?

Divide price by quantity to get price per unit, normalizing to comparable units so different package sizes can be fairly compared.

What assumptions and limitations should I know about?

Assumes quality is equivalent. Normalization works best within same product category. 'Each' items are compared as-is.

Can you walk through a worked example?

$3.49 for 16 oz = $0.218/oz; $5.49 for 32 oz = $0.172/oz - the larger size is cheaper per ounce.

Last updated 10 November 2026 · Formula, worked example and assumptions are documented above, and every result is calculated in your browser.

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