Price-per-unit comparison for 3 products with green winner highlight

How to use

1. Enter price, size and unit for each product you are comparing.
2. Hit Compare — price per base unit is computed and ranked.
3. The cheapest per group is highlighted green with a verdict line.

General information only — not medical, financial or legal advice. Figures cross-checked against public official sources (IRS / HMRC / NHS / WHO guidance); content last reviewed September 2026. For decisions that matter, confirm with a licensed professional in your country.

About this tool

The 500 g pack looks cheaper until you do the math. Enter shelf price and pack size for up to three products; g and kg normalize to grams, ml and l to millilitres, and every product is scored on price per 100 g, per 100 ml or per piece. Mixed pack types are grouped honestly — a gram price is never compared to a litre price — and the cheapest in each group is highlighted green with a plain-English verdict line. It runs the moment you hit Compare, entirely in your browser, with no ads to mis-tap and no data collected. Smart shopping in thirty seconds. Everything runs locally in your browser — nothing is uploaded, nothing is sent to any server, and closing the tab erases it all.

FAQ

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