Paste table data, upload .xlsx or .csv files, preview your data, and download clean structured JSON in seconds. No sign-up. No server upload. 100% browser-based.
Choose your input method, configure options, and get clean JSON output instantly.
Supports .xlsx, .xls, .csv, .tsv — Max 10MB
Disclaimer: Microsoft Excel® is a registered trademark of Microsoft Corporation. Google Sheets™ is a trademark of Google LLC. This tool is an independent utility not affiliated with, endorsed by, or connected to Microsoft Corporation or Google LLC in any way. All processing occurs locally in your browser; no data is transmitted to our servers.
Built for developers, data analysts, and everyday users who need reliable, fast, and private Excel to JSON conversion.
All conversion happens entirely in your browser. Your spreadsheet data never touches any server, keeping sensitive information completely private.
Convert Excel files to JSON in milliseconds. No waiting, no upload queues, no processing delays — results appear the moment you click convert.
Paste directly from Excel, Google Sheets, or any spreadsheet. Or upload .xlsx, .xls, .csv, and .tsv files. Flexible to fit any workflow.
Choose from array of objects, columnar arrays, 2D arrays, or nested formats. Control indentation and structure to match your exact API needs.
The JSON output editor lets you tweak values, rename keys, or make manual adjustments before copying or downloading your final result.
Instant feedback on your input data — empty rows detected, delimiter auto-detected, and output validated as correct JSON before you export.
Four simple steps to convert your spreadsheet data to clean, structured JSON.
Paste table data directly from Excel or Google Sheets, or upload an .xlsx, .xls, or .csv file from your device.
Select your output format, delimiter type, indentation style, and whether to use the first row as column headers.
A live table preview appears so you can verify your data looks correct before committing to the JSON output.
One-click copy to clipboard or download as a .json file. Edit the output directly before exporting if needed.
In today's data-driven development landscape, the ability to seamlessly bridge the gap between spreadsheet-based data management and JSON-powered applications is invaluable. Excel spreadsheets remain the go-to tool for data entry, business reporting, and collaborative data management — yet most modern APIs, web applications, and databases communicate exclusively through JSON (JavaScript Object Notation). Our free Excel to JSON converter eliminates this friction entirely.
Whether you're a backend developer seeding a database, a data analyst preparing a dataset for a REST API, or a product manager transforming a product catalog for an e-commerce platform, converting Excel to JSON is a workflow you'll encounter repeatedly. Rather than writing custom scripts or relying on heavyweight desktop software, our browser-based tool handles tab-separated, comma-separated, and Excel file formats with equal ease.
The benefits extend beyond mere convenience. Because all processing happens client-side in your browser, sensitive business data — financials, customer records, inventory lists — never leaves your device. The converter supports multiple output structures including array-of-objects (ideal for REST APIs), columnar arrays (perfect for charting libraries), and 2D arrays (great for matrix operations). Built-in real-time validation catches common issues like empty rows, inconsistent column counts, and malformed data before you export, saving you debugging time downstream.
Common use cases include migrating data to MongoDB or Firebase, feeding machine learning pipelines, building configuration files from settings spreadsheets, and populating headless CMS platforms. The tool is fast, reliable, and requires zero installation — making it the practical first choice for anyone looking to convert Excel data to clean, developer-ready JSON.
Everything you need to know about converting Excel to JSON online.
Simply paste your Excel table data into the text area or upload an .xlsx/.csv file. Configure your output options, click "Convert to JSON", review the preview table, then copy or download the resulting JSON.
Yes, absolutely. There are no hidden fees, no limits on the number of conversions, no account required, and no watermarks on the output. It's free forever.
Your data is completely safe. All conversion logic runs entirely within your web browser using JavaScript. Nothing is sent to any external server, making it safe to use with confidential or sensitive business data.
We support .xlsx (Excel 2007+), .xls (legacy Excel), .csv (comma-separated values), and .tsv (tab-separated values). You can also paste data directly from Excel, Google Sheets, LibreOffice Calc, or any other spreadsheet application.
Yes! The JSON output area is a fully editable text editor. You can modify key names, adjust values, remove fields, or reformat the structure before copying to clipboard or downloading the .json file.
You can choose from: Array of Objects (each row becomes a key-value object, best for APIs), 2D Array (raw rows and columns), Columnar Arrays (each column becomes an array of values), or Nested (wrapped in a sheet-name object for multi-sheet awareness).
Yes, the tool handles files up to 10MB efficiently. For very large spreadsheets (tens of thousands of rows), processing is done asynchronously to keep the browser responsive. Performance depends on your device's available memory.
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