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Compare two products of different package sizes side-by-side to find the true price per gram, ounce, litre, or piece — defeats supermarket pricing tricks in seconds.
Financial
Generated on July 8, 2026
Compare two products of different package sizes side-by-side to find the true price per gram, ounce, litre, or piece — defeats supermarket pricing tricks in seconds.
A cost-per-unit calculator compares two products of different sizes to determine which offers better value per gram, ounce, liter, piece, or other unit of measurement. This is especially useful for grocery shopping (comparing different package sizes of the same item), bulk purchases (is Costco actually cheaper?
Formula
Unit Cost = Total Price ÷ Quantity. Compare Unit Cost A vs B.You're standing in front of two shelf-tags at Imtiaz: 500g of cornflakes at PKR 600 (PKR 1.20/g) versus 1kg at PKR 1,100 (PKR 1.10/g) — which is actually the better deal? Most shoppers eyeball the bigger pack and assume "bulk = cheaper", but Pakistani supermarkets specifically engineer pricing to mislead on per-unit math because they know nobody calculates. Sometimes the 500g is on a promo and beats the 1kg by 8 percent per gram; sometimes it's the reverse. The only way to actually win at this game is to convert everything to a common unit (per gram, per ml, per sheet, per use) and compare on apples-to-apples per-unit cost. This calculator does that arithmetic in seconds so you stop being fooled. Real Pakistani savings opportunities hide in three specific places: concentrated detergents (15-30 percent cheaper per wash than diluted), private-label staples at Imtiaz, Metro, and Carrefour (20-40 percent cheaper than name brands, comparable quality on most items), and family-size snack packs (15-25 percent cheaper per gram, IF you actually finish them before they go stale). Honest take: the single biggest grocery-budget improvement most middle-class Pakistani families can make isn't switching shops — it's switching from name brands to private labels on the 10-15 most-used staples (rice, oil, atta, sugar, salt, tomato puree, canned beans, basic dairy). Blind taste tests show consumers can't distinguish them. Try the swap honestly for one month.
A cost-per-unit calculator compares two products of different sizes to determine which offers better value per gram, ounce, liter, piece, or other unit of measurement. This is especially useful for grocery shopping (comparing different package sizes of the same item), bulk purchases (is Costco actually cheaper?), comparing branded versus generic versions, and making informed decisions at any retail store. Because packaging sizes vary widely even within the same product line, the 'cheaper-looking' option is often the worse deal once you compare per-unit — a classic supermarket strategy that this tool defeats in seconds.
Dividing price by quantity normalizes two different-sized products to the same per-unit basis. Whichever has the lower unit cost wins. Savings percentage = |A − B| ÷ (larger) × 100.
Family-size snacks typically offer 15–25% better unit cost — but only if you finish before the expiry date.
Concentrated detergents save 20–30% per wash compared to diluted versions.
Store-brand staples are usually 20–40% cheaper per unit with comparable quality.
Bulk grocery warehouses (Costco, Metro) average 10–20% lower per-unit costs than regular supermarkets.
500g cereal for PKR 400 (PKR 0.80/g) vs 1kg for PKR 700 (PKR 0.70/g) → 1kg saves 12.5%.
Coffee 250g for $9 ($0.036/g) vs 500g for $16 ($0.032/g) → larger pack is 11% cheaper per gram.
Shampoo 400ml for PKR 650 vs 750ml for PKR 1,100 → larger is slightly better per ml.
Tissue paper 2-ply 100 sheets for $3 vs 200 sheets for $5 → 200-pack wins per sheet.
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