Shopping & Value
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Price Per Unit & Package Value Comparison Calculator
Compare two or three packaging options side-by-side (grams, kilograms, ounces, pounds, liters, or count) to see which product is genuinely cheaper per unit.
Which package size is cheaper: 500g for $4.50 or 750g for $6.20?How much do I save per 100g, 1kg, or per item by buying the larger pack?What is the percentage price difference between two competing brands?
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Compare Package Sizes
Price
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Quantity
Unit
Price
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Quantity
Unit
Best Value Verdict
Family / Bulk Size is Cheaper8.1% LESS
Option B saves $0.07 per 100g.
Standard Package
$0.90/ 100g
Total: $4.50 for 500g
Family / Bulk SizeBEST VALUE
$0.83/ 100g
Total: $6.20 for 750g
How this calculation works
Converts different weights and volume units to a common base unit to highlight the true economic value.
Formula
Unit Price = Item Price / Standardized Base Quantity (normalized per 100g, 100ml, or unit)
Frequently asked questions
Not always. Supermarkets frequently price medium or promotional smaller packages cheaper per unit than bulk sizes. Calculating the unit price ensures you never overpay.
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