Math Formulas
A quick formula hub for arithmetic, algebra, graphing, and geometry calculators.
How to use the math formulas calculator
Use this formula hub as a reference while working through the calculator pages. Each formula links naturally to a tool that applies it.
- Find the topic that matches your problem.
- Review the formula and what each variable means.
- Open the related calculator to substitute your own values.
Formula or method
Common school math formulas include percent change, slope, quadratic formula, area, and the Pythagorean theorem.
Worked examples
Slope formula
Problem: m = (y2 - y1) / (x2 - x1)
Solution: Use it when you know two points on a line.
Quadratic formula
Problem: x = (-b +/- sqrt(b^2 - 4ac)) / 2a
Solution: Use it to solve ax^2 + bx + c = 0.