liminfoMath Editor
Free web tool: Math Editor
Basic Operations
Fractions/Roots
Integrals/Sums
Greek Letters
Matrices
Logic/Sets
Common Formula Templates
About Math Editor
The LaTeX Math Editor is a free browser-based tool for writing and formatting mathematical expressions using LaTeX syntax. It provides categorized symbol buttons covering basic operations, fractions and roots, integrals and sums, Greek letters, matrix notation, and logic/set symbols — so you can compose even complex formulas without memorizing LaTeX commands.
The tool is used by students, researchers, educators, and developers who need LaTeX-formatted math for papers, presentations, websites, or documentation. Just click a symbol or template to insert it into the editor, then copy the raw LaTeX or the inline-wrapped version with dollar signs, ready to paste into any LaTeX-compatible environment such as Overleaf, Jupyter Notebook, or MathJax-enabled pages.
Technically, the editor works entirely in the browser using React state. The input textarea builds up a LaTeX string as you click symbols or type directly. A live preview panel shows the formatted LaTeX code alongside inline ($...$) and display (\[...\]) format hints, so you always know exactly how the expression will render in a document.
Key Features
- Symbol palette with 6 categories: basic operations, fractions/roots, integrals/sums, Greek letters, matrices, and logic/sets
- One-click insertion of 40+ commonly used LaTeX symbols
- 8 built-in formula templates including quadratic formula, Euler's identity, Taylor series, and Gaussian integral
- Copy raw LaTeX or inline-wrapped $...$ format with a single click
- Live preview showing inline and display format examples side by side
- Monospace textarea for readable and editable LaTeX input
- 100% client-side — your formulas never leave the browser
- Dark mode and mobile-responsive layout for use on any device
Frequently Asked Questions
What is the LaTeX Math Editor?
The LaTeX Math Editor is a free browser-based tool that helps you compose LaTeX math expressions using clickable symbol buttons and formula templates. It shows a preview of your LaTeX code and lets you copy it in raw or inline-wrapped format.
Do I need to know LaTeX to use this tool?
No. The symbol buttons and formula templates let you build expressions by clicking, without typing LaTeX by hand. However, if you are familiar with LaTeX you can also type directly into the textarea for full control.
What symbols and formulas are available?
The tool includes over 40 symbols across categories for basic operations, fractions and roots, integrals and sums, Greek letters, matrix notation, and logic/sets. It also has 8 common formula templates: quadratic formula, Pythagorean theorem, Euler's identity, Taylor series, Gaussian integral, matrix product, partial derivative, and combination formula.
What is the difference between inline and display format?
Inline format ($...$) renders math within a line of text, keeping it compact. Display format (\[...\]) renders math on its own centered line at a larger size. The tool shows both representations in the preview panel so you can choose the right one for your context.
Where can I use the copied LaTeX?
The copied LaTeX works in any LaTeX-compatible environment: Overleaf or other LaTeX editors, Jupyter Notebook with MathJax, Markdown files with LaTeX support (GitHub, Typora), WordPress with MathJax or KaTeX plugins, and HTML pages that load MathJax or KaTeX.
Can I type LaTeX directly instead of using the buttons?
Yes. The textarea is fully editable, so you can type any LaTeX expression manually. The symbol buttons simply append to whatever is already in the field, so you can mix manual typing with button clicks.
Is the Math Editor free?
Yes, it is completely free with no usage limits and no account required. It is part of liminfo.com's collection of free online developer and academic tools.
Is my data safe when using this tool?
Absolutely. All processing happens entirely within your web browser. No content is ever sent to a server, stored in a database, or shared with third parties.