9 tools
Distance Formula Calculator
Calculate the straight-line distance between two points (x₁, y₁) and (x₂, y₂) using the distance formula derived from the Pythagorean theorem.
Linear Equation Solver
Solve any linear equation of the form ax + b = 0 for x instantly. Free step-by-step linear equation calculator with edge-case handling.
Midpoint Calculator
Find the midpoint between two points (x₁, y₁) and (x₂, y₂) on the coordinate plane. Free midpoint formula calculator showing both x and y coordinates.
Percent Error Calculator
Calculate percent error between a measured value and the actual (true) value. Free percentage error calculator for science labs, chemistry, and physics.
Proportion Calculator
Solve a proportion a/b = c/x for the unknown x using cross multiplication. Free proportion and ratio solver for equivalent fractions.
Pythagorean Theorem Calculator
Solve right triangles with the Pythagorean theorem. Find the hypotenuse from two legs, or a missing leg from the hypotenuse and one leg.
Quadratic Equation Solver
Solve ax² + bx + c = 0 with the quadratic formula — real and complex roots, plus the discriminant.
Slope Calculator
Find the slope of a line between two points, plus the angle of inclination and y-intercept. Free slope and rise-over-run calculator with the line equation.
System of Equations Solver (2x2)
Solve a 2x2 system of linear equations using Cramer’s rule. Enter coefficients to find x and y instantly, with determinant and edge-case detection.
