Price per 100g Calculator
Compare 2–4 products by their real unit price: prices are normalized per 100 g, per kg, per litre, per ounce or per item, the cheapest one is highlighted and the rest show how many percent more they cost.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the comparison with the price per 100 grams as the headline number — the unit European shelf labels most often use, and the handiest scale for snacks, cheese, coffee, sweets and anything sold in small packs.
Enter the price and weight of each product in grams, kilograms, ounces or pounds: 2.50 for 500 g becomes 0.50 per 100 g, while 4.00 for 1 kg is 0.40 per 100 g — so the kilogram pack is the better buy and the small one overpays by 25%. Up to four products are compared at once, with the cheapest highlighted.
The price per kilogram and per ounce are shown in the same cards, so you can cross-check the store's own unit label no matter which scale it uses. The finished comparison copies as plain text with one click.
Example. Price 2 for 500 g against price 5 for 1 kg marks the 500 g item cheapest at 4.00 per kilogram and tags the other item as 25 percent more.
Limit. Two to four rows are compared, and mixing a mass unit with a volume or count unit is rejected.