XLSX to JSON
Drop in a .xlsx or .xls workbook and download a JSON document. In "Array of objects" mode (default), the first row is used as object keys and each subsequent row becomes a keyed object. In "Array of arrays" mode, every row is emitted as a list of cell values — useful for sparse or header-less sheets. By default the first worksheet is exported; specify a sheet name to pick a different one. Output is pretty-printed with 2-space indentation. Conversion runs entirely in your browser — your workbook never leaves your device.
Drop .xlsx / .xls file here
or click to choose
Options
Privacy
Runs entirely in your browser — nothing is sent to any server.
Cost
Free. No sign-up, no watermark.
Supports
.xlsx, .xls → .json
Related tools
Tools that work with the same formats — most users open one of these next.
JSON to XLSX
Convert a JSON file into an Excel .xlsx workbook — free online, no upload.
XLSX to CSV
Convert an Excel spreadsheet (.xlsx / .xls) to a CSV file — free online, no upload.
CSV to JSON
Convert CSV files to pretty-printed JSON — free online, no upload.
YAML to JSON
Convert YAML to pretty-printed JSON — free online, no upload.
XML to JSON
Convert XML to pretty-printed JSON — free online, no upload.
JSON to CSV
Convert a JSON array (or object) into a CSV spreadsheet — free online, no upload.
Frequently asked
Is XLSX to JSON free to use?
Yes. XLSX to JSON is completely free with no sign-up, no watermark, and no usage limits. Toolsly does not charge for any of its tools.
Do my files and data stay private?
Yes — XLSX to JSON runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How does XLSX to JSON work?
Open XLSX to JSON, drop in your XLSX, XLS file, choose any options, and click Convert. Your browser does the work locally and produces a JSON file you can save right away.
What's the maximum file size for XLSX to JSON?
Because XLSX to JSON runs in your browser, the maximum size depends on your device's available memory. Most modern phones and laptops handle files up to a few hundred MB without issues.