A quiet place for math.

48 step-by-step solvers — from the percentage trick to eigenvalues. KaTeX formulas, Python verification, nothing to sign up for.

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Featured

∫ Integral CalculatorDefinite, indefinite, by parts d/dx DerivativePower, product, chain rules x² Quadratic SolverFormula, factoring, completing |A| DeterminantCofactor + row reduction σ Standard DeviationSample & population % Percentage8 modes, discount, tax ⌂ Graphing CalculatorPlot f(x), roots, extrema ∑ Math EditorWYSIWYG + live compute

Exam Prep

Timed mock tests and untimed olympiad practice with step-by-step solutions.

AMC AMC 10 / 12 Mock25 MCQ · 75 min · official scoring AIME AIME Mock15 problems · 3 hr · integer 0–999 ★ Olympiad PracticeUSAMO · IMO · RMO · INMO · Putnam JEE JEE Mains 2025 MockAll 10 shifts · official +4 / −1 scoring 📖 JEE PracticeUntimed · stepwise solutions ⚡ Quick Math DrillsMental-math speed drills · 30+ topics 🧠 Math Memory16 brain-training memory games

Browse by Category

Every calculator is one click away in the left sidebar. Quick jumps:

💰 Everyday5 tools Δ Algebra5 tools ∫ Calculus5 tools 𝑴 Linear Algebra10 tools 📊 Statistics21 tools sin Trigonometry3 tools 🏆 Exam PrepAMC · AIME · Olympiad

Frequently asked

Yes, all 48 math calculators are completely free with no registration required. Every tool shows step-by-step solutions with KaTeX-rendered formulas and includes a Python compiler for verification.
Yes, every calculator renders detailed step-by-step solutions using KaTeX math notation. Each step explains the formula applied and shows the intermediate calculation, so you learn the method, not just the answer.
We cover everyday math (percentages, significant figures), algebra (quadratic equations, linear systems, inequalities), 21 statistics calculators (descriptive stats, hypothesis testing, regression, ANOVA), calculus (derivatives, integrals, limits, Taylor series), linear algebra (9 matrix calculators), trigonometry, logarithms, exponents, and graphing. Plus exam-prep emulators: AMC 10/12 mock, AIME mock, and Olympiad practice with stepwise solutions (USAMO, IMO, RMO, INMO, Putnam).
Yes. Most calculators support copy-to-clipboard (plain text or LaTeX), a shareable URL that reproduces your inputs, and PDF download where applicable. You can embed formulas directly into papers, homework, or lecture slides.
Yes. Every calculator is mobile-responsive — the input UI adapts to narrow viewports and the step-by-step solutions remain fully readable on phones and tablets. The left sidebar collapses into a slide-in drawer on screens below 1024 px.
Tools with a worksheet button (integral, derivative, quadratic, and more) open a bank of 1000+ practice problems with full answer keys, organised by topic and difficulty. Perfect for AP, college, or self-study exam prep.