ToolVaults

Unit Price Calculator — Compare Cost Per Ounce, Pound, or Any Unit

Enter multiple products with price and quantity — the calculator ranks them by price per unit (per oz, per lb, per kg, per sheet, whatever) and highlights the best deal.

Runs 100% in your browser — nothing is uploaded.
ItemPriceQuantity (oz)$/oz
$0.4158
$0.3538
Best deal
Store B — $0.3538/oz
Saves $0.0621/oz vs the most expensive option.

How to use

  1. 1
    Add each product

    One row per item — its price and its quantity (in whatever unit the label shows).

  2. 2
    Keep the unit consistent

    All rows must use the same unit for the ranking to make sense. Mixing oz and g needs conversion first (use our Unit Converter).

  3. 3
    Read the ranking

    Best deal is highlighted at top with its price per unit. Everything else sorts by cost per unit ascending.

  4. 4
    Share the comparison

    The URL captures every row — send the link to a partner or paste into a shared shopping doc.

Examples

Cereal — 3 sizes
Input
Row 1: $3.99 · 12 oz
Row 2: $5.49 · 18 oz
Row 3: $8.99 · 24 oz
Output
Best: Row 2 at $0.305/oz. Row 1 = $0.333/oz, Row 3 = $0.375/oz.
The biggest box is the WORST value — mid-size wins. Classic grocery-store trap.
Paper towels — per sheet
Input
Brand A: $19.99 · 480 sheets
Brand B: $24.99 · 720 sheets
Store brand: $14.99 · 360 sheets
Output
Best: Brand B at $0.0347/sheet.
Count-based comparison. Store-brand price looks great until you divide.
Detergent — per load
Input
Pods 42-count: $12.99
Liquid 100 oz (64 loads): $14.99
Output
Best: Liquid at $0.234/load vs Pods at $0.309/load.
Enter the loads-per-package as quantity; ranks by cost per wash.

Frequently asked

What unit should I use?

Whatever's printed on the packages you're comparing — oz, lb, g, kg, fl oz, count, sheet, load. As long as every row uses the same unit, the ranking is meaningful.

Can I compare different units?

Not directly — 12 oz and 500 g need to be converted first. Use our Unit Converter to bring them into the same unit, then paste the numbers here.

Why does the "best deal" sometimes not match the biggest package?

Bulk isn't always cheaper. Warehouse stores occasionally price larger packs higher per unit than the same store's medium size — that's exactly what this tool is designed to catch.

Can I use it for price per lb?

Yes — enter each package's total weight in pounds. The ranking works with any consistent unit: per pound, per ounce, per liter, per sheet, per pod, whatever the packaging shows.

Does it handle "each" or "count" packages?

Yes — for count-based products (paper towels, k-cups, batteries), enter the count as the quantity. Price per unit becomes price per piece.

Is my grocery list saved?

Your entries persist in the URL, so bookmarking or copying the link keeps the whole comparison. Nothing is sent to any server.

Related tools