8 Tools 100% Client-Side

Algebra, Sequences & Matrices

Equation solvers, polynomials, complex numbers, sequences, permutations, matrix algebra, interpolation, and proportionality — consolidated hubs.

Popular in Algebra, Sequences & Matrices

Equation Solver

Solve linear, quadratic, and 2×2 / 3×3 systems of equations in one algebraic tool.

Sequence Calculator

Arithmetic and geometric sequences and sums, plus Fibonacci terms, in one hub.

Matrix Calculator

Add, multiply, transpose, invert matrices; determinant and eigenvalues (≤3×3 for eigen).

All Algebra, Sequences & Matrices

Polynomial Calculator

Evaluate, factor (rational roots), and find roots of polynomials.

Use Tool Free

Complex Number Calculator

Add, subtract, multiply, divide complex numbers; modulus, argument, polar form.

Use Tool Free

Permutation & Combination Calculator

Compute P(n,k) permutations and C(n,k) combinations with exact integers.

Use Tool Free

Linear Interpolation Calculator

Estimate y at x between two points using linear interpolation.

Use Tool Free

Proportionality Calculator

Direct and inverse proportion: find constant k or evaluate y = kx / y = k/x.

Use Tool Free

Algebra, sequences, and matrices

Equation solvers, polynomials, complex numbers, sequences, permutations & combinations, full matrix ops, linear interpolation, and proportionality — modes on strong hubs, not thin clones.

Equations & polys

Linear, quadratic, systems; evaluate, factor, and root polynomials.

Sequences & counting

Arithmetic/geometric/Fibonacci and P(n,k)/C(n,k).

Matrices

Add, multiply, det, inverse, transpose, eigenvalues (≤3×3).

Privacy: Data pasted into these tools is processed locally in your browser and is not uploaded to any server.

Browse Other Categories

Math & Number Calculators Generators Data Formats JSON Utilities Encoding & Decoding Security & Crypto CSS Tools Text & String SQL Tools Color Tools Time & Date Network & Web TypeScript Tools Regex Tools Git Utilities HTML Utilities All tools

Popular across UtilityKit

JSON Formatter

Format and indent JSON for easier reading, sharing, and debugging.

Format JSON online

JWT Decoder & Token Inspector

Decode JWT header, payload, expiry, and structure in one private browser tool.

Decode JWT tokens

Base64 Encoder

Encode text, strings, and binary files into Base64 format online.

Encode Base64 text

Secure Random Password Generator

Generate strong, cryptographically secure passwords with custom rules.

Generate passwords