Free online math tools, no sign-up
Matrix operations, linear systems, numerical integration and polynomial roots — computed instantly in your browser. Built by a computational mathematician.
Matrix Calculator
Add, multiply, transpose, determinant, inverse and rank for matrices up to 6×6, with steps shown.
Linear algebraLinear System Solver
Solve Ax = b by Gaussian elimination with partial pivoting. Detects singular and inconsistent systems.
CalculusNumerical Integration
Evaluate definite integrals with adaptive Simpson's rule. Type any expression like x^2*sin(x).
AlgebraPolynomial Root Finder
Find all real roots of polynomials up to degree 8, including multiple roots, with bisection refinement.
Why these tools?
Most online calculators are slow, ad-stuffed, or wrong on edge cases. These are dependency-free pages: every number is computed locally on your device with standard numerical methods — Gaussian elimination with partial pivoting for linear algebra, adaptive Simpson quadrature for integrals, and critical-point bracketing plus bisection for polynomial roots. Nothing you type ever leaves your browser.
Frequently asked questions
- Are these math tools really free?
- Yes — free forever, no accounts, no usage limits.
- Is my data sent to a server?
- No. All computation happens in JavaScript on your own device. The site is a set of static files.
- How accurate are the results?
- Linear algebra runs in double precision with partial pivoting; integration targets 1e-10 absolute tolerance; roots are refined to about 1e-9. Good enough for homework, engineering checks, and research sanity checks.
- Who built this?
- A computational mathematics researcher. See the about page.