Compare unit prices to find the best value when shopping.
Best Value
Product B
Product A
0.50p/100g
Product B
0.40p/100g
Unit price comparison is one of the simplest yet most powerful ways to save money on your regular shopping. By breaking down the cost to a standard unit (like per 100g, per litre, or per item), you can easily identify the genuine best value, regardless of pack size or promotion. This Calculator Site tool is designed to make this comparison instant and effortless.
Supermarket shelves can be confusing. A larger pack might seem like a better deal, but that is not always the case. By using our VAT Calculator you can also see how much tax you are paying on products. Understanding the true cost helps you make informed decisions and stretch your budget further.
Watch for inconsistent units
A common issue in UK supermarkets is the use of inconsistent units on shelf labels. One product might be priced per 100g, while a similar one is priced per kg. This makes direct comparison difficult without a calculator. Always double-check the unit being used.
Focusing on unit price helps you look past packaging and marketing. Whether you are comparing brands or just different sizes of the same product, the unit price is the great equaliser. For more financial planning, check out our Compound Interest Calculator.
10-15%
Potential saving on groceries
2x
Price difference not uncommon
5 mins
Time to compare a shopping list
How to use this Calculator Site tool
Simply enter the price, quantity, and unit for each product you want to compare. You can add more products by clicking the '+ Add Product' button. The calculator will instantly show you the price per unit for each item and highlight the one that offers the best value.
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