PowerSchool Grade Calculator
An extension that will automatically calculate your grades for powerschool and print them on the page next to your letter grade.
Mileage Calculator by wheretocredit.com
See the number of frequent flyer miles you could earn with Expedia, Orbitz, Travelocity, Hotwire, and more! (all unaffiliated)
Solar Energy Calculator
You can generate your own electricity using solar panels. This application will help you to choose the appropriate solar panel.
Gematria Calculator - Gematrix.org
Gematria Calculator - by gematrix.org. Calculate Gematria values for words and phrases. See similar Gematria phrases online.