Price Per Unit Calculator

A price per unit calculator divides a product's total price by its total quantity to reveal the true cost per gram, ounce, liter, meter, or item. It's the fastest way to see which package is actually cheaper when brands sell the same product in different sizes.

Divide the total price by the total quantity: price ÷ quantity = price per unit. For a $12 bag of 3 kg rice, that's 12 ÷ 3 = **$4 per kg**. If units differ between products, convert both to the same unit first (e.g. ounces to grams) or let this calculator do it for you.

No. Retailers often price mid-size packages lower per unit than the "family size" to nudge you toward a specific SKU, and promotions can flip the winner overnight. Always check the unit price — this tool ranks every option and highlights the cheapest one for you.

Yes. Enter each item in its native unit and the calculator converts everything to a standard unit (kg for weight, L for volume, m for length, m² for area) so the comparison is apples to apples.

Yes. Each row has a discount % and tax % field, and there's a global tax toggle that applies one rate to every item. The ranking uses the effective price — what you actually pay after both — so promotions and taxes change the winner correctly.

Set Packs to the number of identical units in the deal. For a 12-pack of 355 ml cans at $12.99, enter price = 12.99, quantity = 355, unit = ml, packs = 12. The calculator uses the total 4,260 ml to compute price per liter.

They're the same thing. "Unit price" is the legally required shelf label in many countries (US, EU, UK, Canada, Australia), and it always means the total price divided by a standardized quantity such as per 100 g, per liter, or per item.

Yes. Set the unit to item (or g / ml for portions) and enter the number of servings as the quantity. The "per item" result becomes your cost per serving, which is useful for meal planning, catering, and cafés.

Yes. Pick from USD, EUR, GBP, CAD, AUD, JPY, INR, BRL, MXN, CHF, SEK, NOK, DKK, PLN, ZAR, and NZD. Values are formatted with the correct symbol, separators, and decimal places using your browser's locale.

Completely. The calculator runs entirely in your browser — no accounts, no analytics on your inputs, and nothing is sent to a server. Close the tab and the data is gone unless you export it as CSV.

Yes. Use Copy CSV to paste results into Google Sheets, Excel, or Numbers, or Download CSV for a file. Both include names, effective prices, per-unit prices, per-standard-unit prices, and the ranking.

Because unit price depends on price, size, promotions, and tax — not size alone. A smaller item on sale with a coupon can easily beat a jumbo pack at full price. The ranking uses effective price per standard unit, so the winner is the one that actually costs the least for the same amount of product.