Unit Price Calculator
Compare the true cost of grocery products by calculating the price per 100g, 100ml, or per unit.
Frequently Asked Questions
What is unit price?
Unit price is the cost per standard unit of measurement (e.g. per 100g, per litre, or per item). It allows you to compare products of different sizes to find the best value. In Australia, supermarkets are required to display unit pricing on shelf labels.
How do I compare grocery prices?
To compare grocery prices fairly, calculate the unit price by dividing the total price by the quantity, then convert to a standard measurement like per 100g or per litre. This lets you compare products regardless of pack size. Our calculator above does this automatically.
Which supermarket is cheapest per unit?
It varies by product. Aldi tends to offer the lowest everyday prices on staples, while Coles and Woolworths rotate deep half-price specials each week that can beat Aldi on specific items. The best approach is to compare unit prices during weekly specials using a tool like this one.