You can calculate the unit price using the unit price formula. Divide the item's total price by the number of units of the item:

unit price = total price / no. of units.

For a package with multiple items, the unit price formula reads:

unit price = total price / no. of items.

For example, you can compare a dozen eggs for $2.99 and an 18-egg package for $3.50 if you use the unit price calculator in Items mode. The calculator quickly determines that an 18-egg package is cheaper by $0.05/egg.

The unit price is the cost per ounce, per pound, per kilogram, per liter, or other units of weight or volume of an item you want to buy.

For example, let's say you're hungry for pancakes and need to buy some flour. In the shop, you have two choices: a smaller package – $1 for 1 kg, and a larger one – $1.35 for 1.5 kg. You'd need to consider the unit price to know which is a better buy.