Proofline is a full program that runs in your browser and needs JavaScript. Please enable JavaScript, or use its engine as tools without it:
- Math Workbench – Simplify, factor, differentiate, integrate, solve, take limits, series and plots in one box.
- Step-by-Step Equation Solver – Solve linear, quadratic, rational and radical equations or linear systems with every step shown.
- Graphing Calculator – Plot up to 6 functions or parametric curves with roots, extrema, intersections and SVG/PNG export.
- Matrix & Linear Algebra Lab – Exact-fraction RREF with steps, determinant, inverse, null space, eigenvalues, LU/QR and Ax = b.
- Number-Theory Lab – Primality, factorisation, gcd, modular arithmetic, CRT, φ, π(n), Collatz, continued fractions.
- Probability & Statistics Studio – Distributions, descriptive stats, confidence intervals and t, chi-square and z tests with p-values.
- Graph Algorithm Visualizer – BFS, DFS, Dijkstra, Bellman–Ford, A*, MST, topological sort and SCCs on your edge list.
- Big-O Crossover Calculator – When does c₁·n log n beat c₂·n²? Crossover points, log-log chart and run times.
- Erasure-Coding Playground – Reed–Solomon over GF(256): encode data into k + m shards, lose some, rebuild it.
- Floating-Point Explorer – See how IEEE-754 half/single/double store a number: bits, exact value, ULP, rounding error.
- Equation Art Studio – Turn math into art: parametric, polar, Lissajous, rose and spirograph curves.
- Regex Golf Arena – Match the left list, avoid the right list — in as few characters as possible.
- Keyboard Heatmap Visualizer – Paste any text: see which keys and fingers do the work on QWERTY, Dvorak, Colemak & co.
← Proofline · Tutorials
Proofline
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