Classroom calculators and math tools for teachers.

Calculate weighted GPA from three courses.

Calculate what percent one number is of another, or find what value a percentage represents.

Calculate average from a list of numbers.

Calculate hypotenuse from two right-triangle legs.

Scale a ratio up or down while keeping the same proportion between its parts.

Count words, characters, sentences, and estimated reading time.

Calculate age in years, months, and days.