About Calxsolver

Calxsolver is a collection of math tools focused on one thing: showing the working, not just the final answer. Every solver runs entirely in your browser — no account, no paywall on the steps.

How it works

Each tool is defined once in a shared registry and reused for routing, navigation and search-engine metadata. The math runs in a dependency-free engine, so results appear instantly without a server round-trip.

Who maintains Calxsolver

Calxsolver is maintained by the Calxsolver Editorial Team — the small group responsible for keeping the tools working and the explanations clear. We describe the team by its role rather than by individual names.

• Maintaining the solvers and the shared registry that defines them
• Writing and reviewing the educational content and step explanations
• Checking that worked examples match what the solvers produce
• Triaging error reports sent in by readers and fixing confirmed issues

How we build the tools

Every solver is defined once in a shared registry: its inputs, examples, and the routine that computes the result. Pages, navigation, and search metadata are generated from that single definition, so the same tool behaves consistently everywhere it appears.

Results are produced by the site's own calculation engine rather than an external service. The point of each tool is to show the working: alongside the answer, the solver generates the intermediate steps so you can follow the method, not just read the final number.

Accuracy

Calculations use standard double-precision arithmetic, and results are rounded only to remove floating-point noise. For most inputs the answers are exact; for irrational results they are accurate to roughly ten decimal places. Automated results can still contain mistakes, so please verify anything you rely on for schoolwork, exams, or professional use.

Read the full accuracy & methodology page

Available solvers

• Expression Calculator — Evaluate arithmetic with correct order of operations.
• Linear Equation Solver — Solve mx + b = c for x with each algebra step shown.
• Quadratic Equation Solver — Solve ax² + bx + c = 0 with roots, vertex and discriminant.
• System of Equations (2×2) — Solve two linear equations in x and y by Cramer's rule.
• Slope & Line Equation — Slope, intercept and line equation through two points.
• Distance & Midpoint — Distance and midpoint between two points in the plane.
• Arithmetic Sequence — nth term and sum of an arithmetic sequence.
• Geometric Sequence — nth term, partial sum and infinite sum of a geometric sequence.
• Logarithm Calculator — Logarithm of a value in any base, via change of base.
• Simplify Expression — Expand products and collect like terms in a polynomial expression.
• Factoring Calculator — Factor a polynomial over the rationals into linear and irreducible factors.
• System of Equations (3×3) — Solve three linear equations in x, y, z by Cramer's rule.
• Linear Inequality Solver — Solve mx + b OP c for x, including the flip when m is negative.
• Quadratic Inequality Solver — Solve ax² + bx + c OP 0 with discriminant and sign chart.
• Absolute Value Inequality Solver — Solve |ax + b| OP c by splitting into the two cases.
• Partial Fractions Calculator — Decompose a rational expression P(x)/Q(x) into simpler fractions.
• Right Triangle Solver — Solve a right triangle from its two legs.
• Trig Function Evaluator — Evaluate sin, cos, tan, csc, sec or cot of an angle.
• Pythagorean Theorem — Find the missing side of a right triangle.
• Law of Cosines — Solve a triangle from two sides and the included angle.
• Law of Sines — Solve a triangle from two angles and a side.
• Angle Converter — Convert degrees and radians, with reference angle.
• Trig Equation Solver — Solve sin(x) = c, cos(x) = c, tan(x) = c (and reciprocals) with general solution.
• Trig Identity Verifier — Check whether LHS = RHS as an identity by numeric sampling.
• Cartesian to Polar Coordinates — Convert (x, y) to (r, θ), reporting θ in both degrees and radians.
• Polar to Cartesian Coordinates — Convert (r, θ) to (x, y), accepting θ in degrees or radians.
• Polynomial Derivative — Differentiate a polynomial exactly with the power rule.
• Polynomial Integral — Integrate a polynomial — indefinite or definite.
• Derivative Calculator — Symbolic derivative of any function — chain, product and quotient rules.
• Integral Calculator — Symbolic antiderivative — indefinite or definite — with full working.
• Derivative at a Point — Numeric derivative of any function of x at a point.
• Definite Integral — Numeric definite integral of any function of x.
• Limit Calculator — Estimate the limit of a function as x approaches a value.
• Tangent Line Calculator — Equation of the tangent line to a curve at a point.
• Permutations & Combinations — Compute nPr, nCr and the factorial.
• Binomial Expansion — Expand (ax + b)ⁿ with the binomial theorem.
• Complex Number Calculator — Add, subtract, multiply or divide complex numbers.
• Polynomial Long Division — Divide one polynomial by another for quotient and remainder.
• Exponential Equation Solver — Solve a·bˣ = c for the exponent x.
• Function Inverse Calculator — Find f⁻¹(x) for linear, exponential, logarithmic, radical and linear-fractional functions.
• Function Composition Calculator — Compute (f ∘ g)(x) symbolically, plus an optional value at x = a.
• Domain & Range Calculator — Find domain restrictions and the range of a function of x.
• Circle Calculator — Equation, expanded form, diameter, circumference and area of a circle.
• Parabola Properties — Vertex, axis, focus, directrix and intercepts of y = ax² + bx + c.
• Ellipse Properties — Vertices, foci, eccentricity and area of an ellipse from (h, k, a, b).
• Hyperbola Properties — Vertices, foci, asymptotes and eccentricity of a hyperbola.
• Descriptive Statistics — Mean, median, mode, range and standard deviation.
• Z-Score Calculator — Standardize a value against a mean and standard deviation.
• Normal Distribution Calculator — Probabilities for a normal distribution N(μ, σ).
• Confidence Interval Calculator — Confidence interval for a population mean.
• Linear Regression Calculator — Least-squares line and correlation for paired data.
• Probability Calculator — Union, intersection, complement, conditional probability and independence for two events.
• Bayes' Theorem Calculator — Compute the posterior P(A | B) from a prior P(A) and two likelihoods.
• Binomial Distribution Calculator — P(X = k), P(X ≤ k), P(X ≥ k) plus mean and variance for Binomial(n, p).
• Poisson Distribution Calculator — P(X = k), P(X ≤ k), P(X ≥ k) plus mean and variance for Poisson(λ).
• One-Sample t-Test — Test a sample mean against a hypothesized μ₀ — t, df, p-value, conclusion.
• Chi-Square Goodness-of-Fit Test — Compare observed and expected frequencies — χ², df, p-value.
• Z-Test for a Proportion — Test a sample proportion against a hypothesized p₀ — z, p-value, conclusion.
• Matrix Determinant — Determinant of a square matrix.
• Matrix Multiplication — Multiply two matrices A·B.
• Matrix Inverse — Inverse of a square matrix via Gauss-Jordan.
• Matrix Addition & Subtraction — Add or subtract two matrices entrywise.
• Vector Calculator — Magnitude, dot product, cross product and angle.
• Matrix Transpose — Swap rows and columns to get Aᵀ.
• Matrix Trace — Sum of the diagonal entries of a square matrix.
• Matrix Rank — Number of linearly independent rows — by row reduction.
• Reduced Row Echelon Form (RREF) — Gauss-Jordan elimination with every row operation shown.
• Solve a Linear System (Ax = b) — Gauss-Jordan on the augmented matrix — unique, infinite or no solution.
• Eigenvalues and Eigenvectors — Characteristic polynomial, real eigenvalues and one eigenvector per eigenvalue.
• Vector Projection — Projection of a onto b, scalar projection and the perpendicular component.
• Function Grapher — Plot y = f(x) with zeros, extrema and the y-intercept marked.
• Multi-Function Grapher — Plot two functions on one chart and locate every intersection.
• Parametric Grapher — Plot a parametric curve (x(t), y(t)) over an interval in t.
• Polar Grapher — Plot a polar curve r = f(θ) — roses, cardioids, spirals, conics.
• Inequality Region Grapher — Shade the region y > f(x), y < f(x), y ≥ f(x) or y ≤ f(x).
• Function Feature Analyser — Zeros, extrema, monotonicity, asymptotes and end behavior — without a plot.
• Function Value Table — Tabulate f(x) at evenly spaced x values — useful for sketching by hand.
• Simple Interest Calculator — I = Prt — find interest and the final amount on a flat-rate loan or deposit.
• Compound Interest Calculator — A = P(1 + r/n)^(nt) for discrete compounding, A = Pe^(rt) for continuous.
• Annuity Calculator — Future value or present value of an ordinary annuity from payment, rate and periods.
• Loan Payment Calculator — Periodic payment, total interest and a first-rows amortization preview.
• Markov Chain Calculator — Iterate the distribution and find the steady-state vector π.
• Linear Programming Solver (2 variables) — Graphical method — feasible region, corner-point evaluation and the optimum.
• Truth Table Generator — Build a truth table for any propositional formula over p, q, r, s.
• Order of Operations Worksheet Generator — Random PEMDAS / BODMAS problems with the answer key — reproducible by seed.
• Linear Equations Worksheet Generator — Random one-variable linear equations with integer solutions and the answer key.
• Quadratic Equations Worksheet Generator — Factorable quadratics on easy/medium, quadratic-formula irrationals on hard.
• Polynomial Multiplication Worksheet Generator — FOIL and similar binomial products, with the expanded answer key.
• Polynomial Factoring Worksheet Generator — Trinomials and special forms — factor and check against the answer key.
• Polynomial Derivative Worksheet Generator — Apply the power rule to random polynomials — answers ready to mark.
• Polynomial Integral Worksheet Generator — Antiderivatives via the reverse power rule, with the answer key.