Comparison
How to compare
Enter the price you actually pay, the size of one item, and the number of items in the package. Compatible units are converted automatically. For promotions, enter the actual total price paid.
How unit price is calculated
The calculator multiplies the size of one item by the package quantity, converts compatible measurements to a common unit, then divides the total price by the total amount. Compare weight by 100 g, 500 g, or kilogram; volume by 100 ml or liter; and count-based products by item, pack, bottle, roll, or another selected unit.
Frequently asked questions
What is a unit price?
A unit price is the cost per standard amount, such as per 100 g, per liter, or per item. It makes different package sizes easier to compare.
How do I compare two different package sizes?
Enter the total price, package size, and quantity for each product. The calculator converts compatible units and calculates the unit price automatically.
Can I compare grams and kilograms?
Yes. Grams, kilograms, ounces, pounds, jin, and liang are converted to a common weight before comparison.
Can I compare milliliters and liters?
Yes. Milliliters, liters, and US fluid ounces are converted automatically.
Can I compare grams with milliliters?
No. Weight and volume cannot be converted reliably without knowing the product's density.