Unit Price Calculator (Compare Value)
Compare products by price per unit — per 100 g, per kg, per litre or per item — to find which pack size is the best value.
For information and education only — not financial advice. Results are estimates based on the numbers you enter; check important decisions with a qualified professional.
How to use
- 1Enter the price and size of up to three products (in the same unit).
- 2The cheapest price per unit is highlighted as the best value.
Frequently asked questions
Is the bigger pack always cheaper?
Often, but not always — promotions on smaller packs frequently beat bulk prices. Comparing unit prices shows the real answer.
Do the sizes need the same unit?
Yes. Convert first if one is in grams and another in ounces — our weight converter can help.
Should I always buy the best unit price?
Only if you'll use it all. A bigger pack that goes to waste costs more than a smaller one you finish.