All maths tools
Twenty focused calculators and solvers, grouped by topic. Each one runs entirely in your browser.
Core solvers
Unique tools
Step-by-Step Solver
Type any equation and see every reasoning step alongside a graph of both sides.
Adaptive Practice Mode
Endless problems that get harder as you do, with hints and a streak that persists in your browser.
3D Surface Plotter
Plot z = f(x, y) as an interactive wireframe surface. No WebGL, no library, just maths.
Algebra & arithmetic
Quadratic Equation Solver
Discriminant, roots, vertex, axis of symmetry and parabola plot — all in one place.
Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers with full simplification.
Percentage Calculator
Percent of value, ratio as percent, percentage change, increases and discounts.
Matrix Calculator
Add, multiply, transpose, invert and reduce matrices up to 6 × 6 with LU determinants.
Calculus & graphing
Derivative Calculator
Symbolic differentiation up to 4th order using the product, quotient and chain rules.
Integral Calculator
Definite integrals via composite Simpson’s rule with adaptive sample counts.
Logarithm Calculator
Logarithms in any base, natural log, common log and the inverse exponential.
2D Graph Plotter
Plot up to four functions of x at once with auto-fit y-axis and zoom controls.
Geometry & trigonometry
Number theory
LCM & GCD Calculator
Greatest common divisor and least common multiple of any list of integers.
Prime Factorization
Decompose any positive integer into its prime factors with divisor count and sum.
Number Base Converter
Convert between binary, octal, decimal, hexadecimal, and any base from 2 to 36.