📐 Algebra & Geometry
Free algebra and geometry calculators: equation solver, quadratics, factoring, derivatives and integrals, matrices, vectors, circles, volumes and Pythagoras.
From solving one equation to checking a proof step: the solver handles linear and quadratic systems, factoring shows the breakdown, and derivatives and integrals come with rules named.
Geometry covers circles, circumference, volume and the Pythagorean theorem; vectors, matrices, slopes and trigonometry complete the set for homework and quick engineering checks.
Circle Calculator
Find area, circumference, diameter, and radius of any circle.
Circumference Calculator
Find the perimeter or circumference of common shapes in seconds. Pick a shape, enter its dimensions and get the total boundary length instantly.
Derivative Calculator
Find the derivative of any polynomial. Enter the coefficients from the highest degree to the constant term and get the differentiated result instantly with each step shown.
Equation Solver
Solve linear equations of the form ax + b = c with step-by-step solutions.
Polynomial Factoring Calculator
Factor quadratic expressions of the form ax² + bx + c into linear factors. Enter the coefficients to find the roots and the complete factored form.
Integral Calculator
Find the indefinite integral (antiderivative) of any polynomial. Enter the coefficients from the highest degree to the constant term and get the integrated result instantly.
Matrix Calculator
Add, subtract, multiply and compute the determinant of matrices. Choose between 2×2 and 3×3 sizes, enter your elements and get instant results.
Pythagorean Theorem Calculator
Solve right triangles with the Pythagorean theorem. Enter any two sides — legs a and b or hypotenuse c — and the missing side is calculated instantly.
Quadratic Equation Calculator
Solve any quadratic equation of the form ax² + bx + c = 0. Enter the coefficients a, b and c to get both roots, including real and complex solutions, with a full discriminant breakdown.
Slope Calculator
Find the slope, angle and distance between any two points. Enter the coordinates and get an instant, accurate result — perfect for algebra, geometry and graphing.
Tank Capacity Calculator
Calculate the capacity of cylindrical or rectangular tanks in liters, gallons and cubic meters. Enter diameter/radius or length, width and height for instant results.
Trigonometry Calculator
Find sin, cos, tan, csc, sec and cot for any angle in degrees or radians. Includes a visual unit circle and special-angle reference table.
Vector Calculator
Perform vector addition, subtraction, dot product, cross product, magnitude and angle calculation in 2D or 3D, with a visual parallelogram diagram.
Volume Calculator
Find the volume of cubes, cylinders, spheres, cones, and rectangular boxes.
Frequently asked questions
Which equations can the solver handle?
Linear, quadratic and systems up to the supported size; solutions come with steps and discriminant or consistency checks where relevant.
Do the calculus tools show steps?
Derivatives and integrals name the rule applied — power, product, chain — so the result is verifiable, not a black box.
How precise are the geometry calculators?
Exact formulas with controllable rounding; π is carried at full precision internally and rounded only for display.