Unit Price Checker

The real price per 100g, 100ml, or item on Amazon — compare fairly, whatever unit the seller uses.

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Which one is actually cheaper?

Sellers mix ounces, kilograms, and pack counts. Unit Price Checker converts everything to the same unit so the answer is obvious.

Dark Roast Ground Coffee, 40.3 Ounce

$14.44

$1.26 / 100gBETTER DEAL

Premium Ground Coffee, 1 kg

$18.99

$1.90 / 100g

Packs and mixed units? Handled.

"12 x 330ml", "8 Ounce (Pack of 8)", "81 Count" — the extension multiplies out the real total before dividing, and shows per-item prices for packs.

Sparkling Water Cans, 12 x 330ml

$27.99

$0.71 / 100ml

Laundry Detergent Pods, 81 Count

$21.99

$0.27 / item

Private by design

No account, no sign-up, no data collected — ever. All calculations happen inside your browser and nothing leaves it. Works on Amazon.com, .co.uk, .ca and .com.au in your account's currency.