Price Per Unit Calculator
Work out the price per unit to compare products of different sizes fairly.
Comparing on the same basis
Products come in different pack sizes at different prices, which makes it hard to see which is the better deal. This works out the price per unit — per item, per kilo, per litre — so you can compare products on the same footing and spot the genuine value rather than being swayed by the sticker price.
Enter the prices and sizes to see the price per unit.
Bigger isn't always cheaper
The assumption that the larger pack is always better value is frequently wrong, and retailers rely on it — sometimes the mid-size is cheapest per unit, and multi-buys are not always the saving they appear. Only price per unit reveals the truth. Many shops print a unit price on the shelf label to help, but the units are not always consistent between products, which is exactly when working it out yourself settles the question. It is one of the simplest habits that saves real money over time, turning a confusing shelf into a clear comparison.
Price Per Unit Calculator FAQ
Is the biggest pack always the best value?
No — retailers count on that assumption. Sometimes a smaller size is cheaper per unit, and only comparing price per unit reveals which genuinely costs less.
Why not just trust the shelf unit price?
Shelf labels help, but the units are not always consistent between products, so working it out yourself settles an unclear comparison.
Is anything uploaded?
No. The calculation happens in your browser.