Simple to use weight watchers calculator.
The features include:

Latest Calculator (Effective after December 2015) - Points are based on calories, sugar, saturated fat, and protein. Default calculation is based on 100g portion.
Old Calculator (Used until December 2015) - Points are based on protein, carbohydrates, fat and fiber.
Option to enter product weight. Default calculation is based on 100g portion.

Disclaimer: This application has no affiliation with Weight Watchers®, and provided information was obtained from Wikipedia under the GNU Free Documentation License. It does not purport to have any relationship with Weight Watchers® and has no intent to present Weight Watchers'® product as its own. This calculator's intent is to provide a convenient method for estimating point values based on formula from Wikipedia