Price per Kg 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 kilogram as the headline number: enter what each pack costs and how much it weighs — in g, kg, oz or lb — and every product is restated as its cost for one kilogram, the only figure that makes different pack sizes comparable.
The classic supermarket trap is exactly the example preloaded here: 2.50 for 500 g feels cheaper than 4.00 for a whole kilogram, but normalized it is 5.00/kg against 4.00/kg — the big pack wins and the small one costs 25% more per kilogram. The calculator does that arithmetic for up to four products at once and highlights the winner.
Prices per 100 g and per ounce are computed in the same run, so the result matches whichever unit label your store prints on the shelf edge. The whole 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.