SheetXL is the open spreadsheet ecosystem — modular, embeddable, and fully scriptable.

Excel-compatible. API-first. Built for speed.

If you like SheetXL give us a star ⭐ and help others find us!

Whether you're building a custom UI, adding live scripting, or integrating spreadsheet logic into your app, SheetXL gives you full control with zero platform lock-in.

Headless API. Live Scripting. CLI Tools. Built for developers.

👉 See a full SheetXL demo

Get started in minutes with our production ready application.

# Using npm
npm install @sheetxl/sdk @sheetxl/studio-mui @mui/material @emotion/react @emotion/styled

# Using yarn
yarn add @sheetxl/sdk @sheetxl/studio-mui @mui/material @emotion/react @emotion/styled

import React from 'react';
import { Studio } from '@sheetxl/studio-mui';

function App() {
  // Studio will fill it's parent container.
  return (
    <div style={{ height: '600px', width: '100%' }}>
      <Studio />
    </div>
  );
}

For more advanced setup options, check out our full Getting Started Guides.

The SheetXL ecosystem is modular by design. You can use only what you need — or compose it all together.

At the core of the ecosystem is a headless, high-performance SDK @sheetxl/sdk, built to power everything from lightweight grid widgets to massive enterprise-scale calculation engines

Key features:

• Blazing Speed: Executes 10M+ operations per second and handles spreadsheets with 17B+ cells.
• Powerful API: A modern, vectorized, range-based API for precise, scriptable control over data — independent of any UI.

Build UIs your way — from plug-and-play dashboards to fully custom design systems.

• Rapid Deployment @sheetxl/studio-mui: A complete, open-source spreadsheet UI with Excel-grade features. Ready to ship.
• Custom Interface @sheetxl/react: A flexible component and hook library for deep customization.

Easily load and save workbooks in popular formats:

• xlsx (Excel)
• csv
• parquet (in progress)
• json (native format)

SheetXL is built on four core pillars: extreme performance, deep Excel compatibility, unparalleled developer power, and a modern, extensible architecture.

• Performance & Scale

  Process 10M+ ops/second and manage massive 17B+ cell workbooks, all in-browser.

• True Excel Fidelity

  Go beyond basic formulas. Get the Excel-grade features your users demand, from tables and charts to cross-sheet copy/paste.

• Unmatched Developer Power

  With a headless core, a powerful vectorized API, and a built-in scripting engine, you have the ultimate control to build any experience.

• Modern, Open Architecture

  Built with TypeScript and a flexible plugin model, including a fully open-sourced MIT-licensed MUI design system.

Write and execute TypeScript/JavaScript directly inside your spreadsheet. Perfect for complex data transformations, custom validation, and real-time calculations.

Automate spreadsheet operations, run batch processes, and integrate SheetXL into your build pipeline with our full-featured CLI.

# Run custom scripts
sheetxl run process-data.ts --workbook sales.xlsx

• 17B+ cells (The same as Excel)
• 400+ Excel-compatible formulas
• Full fidelity Excel import/export
• Scripting Engine
• Fast. Autofill 1,048,576 rows with formulas in 0.7s (10M+ formulas/second)

• Typescript
• Easy Integration

• Table Filtering (in progress)

We believe developers have been forced to compromise between powerful but closed spreadsheet apps and flexible but limited data grids for too long. SheetXL was built to end that compromise.

Importing and Exporting data from a spreadsheet is a broken part of nearly every business workflow. Instead of importing/exporting data, just import the spreadsheet.

• Reduce errors on data due to import/export copying of data.
• Real time integration/validation of your data.
• Complete control of data as your data never leaves your systems.
• Improved user productivity.
• Combine custom user enhancements with flexible data manipulation.

As a Microsoft Excel user and a React developer I have always wanted a solution that combines the flexibility and ease of use of Excel with the control and specific capabilities of my custom application.

I wanted my custom applications to have spreadsheet features!

Several great spreadsheet components exists but none of them have:

• Excel compatibility and features.
• Simple integration.
• Billions of cells.
• Comprehensive support for keyboard shortcuts (e.g. tabbing within multi-selected ranges, arrow-keys within cells).
• Enable advanced copy / paste between Excel/Excel Online/Google Sheets.
• Easily extendable libraries that use open-source and modern design patterns.
• Real-time integration to data providing a single source of truth; no copying data between systems using complex APIs.

We encourage you to explore the landscape. We're confident you'll see why we built SheetXL.

• Formula.js (For function references)
• Fast Formula Parser (For grammar support)
• SheetJS (For original number format parsing and Excel import/export)
• Papa Parse (For CSV parsing)

Whether you're ready to build, need help, or just want to see more examples, here's where to go next.

• 💬 Join our Discord Community - Get help and connect with the
• ⭐ Star us on GitHub - If you like SheetXL give us a star ⭐ and help others find us!
• 📘 Developer Docs - Guides and tutorials.
• 🔌 API Reference - Detailed documentation for all packages.
• 👀 Live Demo Gallery - A showcase of interactive examples.
• 🖼️ Storybook - Explore and test individual UI components. team.
• 🌐 Website - Our Website.