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Price Per Unit Calculator

Compare unit prices to find the best deal

Unit Rate / Price Per Unit

$

A price per unit calculator finds the cost per unit to compare products of different sizes or quantities. It is the only fair way to compare value across different pack sizes.

  1. 1Price per unit = Total price / Quantity
  2. 2Use the same unit for all items being compared
  3. 3UK and EU supermarkets must display unit price by law
  4. 4Consider whether you will use the full quantity before expiry
300ml for £1.20 vs 500ml for £1.85=Per 100ml: 300ml = 40p; 500ml = 37p — 500ml is better value
ProductPriceQuantityPer unit
Small pack£1.20300ml40p/100ml
Large pack£1.85500ml37p/100ml
Bulk pack£4.201,500ml28p/100ml
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