Unit Price Comparison Calculator
Compare the cost per kilogram, litre, item or other unit for two products to find the better value.
Set your values
Adjust the values, then calculate your result.
How to use Unit Price Comparison Calculator
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Compare unit prices” to see a clear estimate and the formula used.
How the unit price comparison calculator works
Unit price = package price ÷ package quantity. The lower unit price is cheaper for the same quantity.
Check your measurements and assumptions
Enter both quantities in the same unit (for example, grams and grams). Promotions, quality and waste are not included.
Review the estimate before you act
Compare this result with an independent measurement, supplier quote or institution guidance when the decision matters. Confirm that the units and assumptions match the labels above, and update the inputs when the conditions change. Keep a note of the values used so you can reproduce the estimate later. This calculator is a planning aid and does not replace professional, product-specific or local guidance.
How do I compare price per 100 grams?
Divide each package price by its weight in grams, then multiply by 100.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.