School calculators
Work out the grade you need, your GPA on your own school’s scale, and fractions with every step shown. Where schools differ, the calculator asks rather than assumes.
- FractionsAdd, subtract, multiply and divide fractions and mixed numbers, with every step shown.
- GPAYour term and cumulative GPA, weighted or unweighted, on the grade scale your school uses.
- Final GradeThe score you need on the final to reach the grade you want.
- Standard DeviationSample or population standard deviation, variance and mean of a list of numbers, with every step shown.
- TriangleSolve any triangle from three sides and angles: the missing sides, angles, area and perimeter.
- AreaThe area of a square, rectangle, triangle, trapezoid, parallelogram, circle or ellipse, with the formula worked through.
- VolumeVolume and surface area of a cube, box, cylinder, cone, sphere or pyramid, with the capacity in gallons or liters.
- SlopeThe slope of the line through two points as an exact fraction, with its equation, angle, grade and midpoint.
- ProportionSolve a/b = c/d for the missing value with cross-multiplication shown, or check whether two ratios are equal.
- Pythagorean TheoremThe missing side of a right triangle from the other two, with the exact square root, the angles and every step.
- Mean, Median, ModeFind the mean, median, mode and range of a list of numbers, with the values sorted and every step shown.
- LCM & GCFFind the least common multiple and greatest common factor of two or more numbers, with each prime factorization shown.
- Long DivisionDivide step by step, the way it is done on paper, with the remainder, the decimal, and where the decimal starts repeating.
- Quadratic FormulaSolve ax² + bx + c = 0 with the discriminant and every substitution shown, and exact roots in simplest radical form.
- Scientific NotationConvert to and from scientific and E notation, or add, subtract, multiply and divide, with significant figures kept.