Should you buy 4 12-packs for $10.75 or would it be better to buy 3 2-liter bottles for $3.89? Use the comparison tool below to learn that the 12-packs are the better deal.

This can be easily done with any calculator, but how many people remember the number of ounces in a liter?

Put the price for any item in the appropriate box and hit Enter to compute the prices for other quantities and container sizes. You can also put simple math in the box. For instance, to figure the cost when something is advertised at 4 for $9.50, input 9.50/4

There is also a liquid volume calculator for a couple of common beverage sizes after the price calculator.