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Free Equation Solver Online

Solve equations, simplify expressions, compute derivatives, and evaluate math.

Examples

How to use Equation Solver

Three steps. Instant results.

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Step 1

Type your mathematical equation into the input box.

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Step 2

Click Solve to calculate the roots or solution.

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Step 3

View the step-by-step breakdown or final answer.

How Equation Solver works

Uses math.js — a powerful math library for JavaScript. Supports algebra (linear and polynomial equations), symbolic simplification, calculus (derivatives), matrix operations, unit conversions, and complex number arithmetic. The solver uses algebraic manipulation for linear equations and numerical methods for nonlinear ones. Everything runs in your browser.

Frequently asked questions

What types of equations can this solve?

It can solve basic algebraic equations (like linear and some quadratic), simplify expressions, compute derivatives, and evaluate expressions.

Is the equation solver free?

Yes. It is free with no signup or limits.

What syntax should I use?

Use math.js syntax. Examples: use * for multiplication, ^ for powers, and parentheses for grouping.

Is my data uploaded?

No. Everything runs locally in your browser.

Does it work offline?

Yes. After the page loads, it continues working without internet.

Can it plot graphs?

This tool focuses on solving and simplifying. For graphing, use the Graph Plotter tool.