School and math calculators

Grades and homework math. Each page shows the steps, so it works for checking an answer as well as getting one.

GPA CalculatorFind your grade point average from letter grades and credits.
Final Grade CalculatorFind out what you need on the final to hit your target grade.
Fraction CalculatorDo math with fractions and mixed numbers and get a simplified answer.
Ratio CalculatorScale a ratio up or down, or reduce it to its simplest form.
Standard Deviation CalculatorPaste a data set and get its spread and summary statistics at once.