XLSX to JSON
Export an explicitly selected worksheet from an Excel workbook.
Drop your files here
Make something new. Keep everything private.
Multiple files welcome · processed one at a time
Select a tool to see its supported formats and conversion limits. Large files may exceed your browser’s memory.
Before processing large files
On phones and tablets, start with files under 20 MiB and keep this tab in the foreground. Video, OCR and 3D operations can use several times the input size in memory. Desktop browsers generally have more room, but the 128 MiB job limit is not a guarantee that every file will fit. Smaller batches reduce memory pressure.
Supported input formats
- Microsoft Excel Open XML workbook (.xlsx)
Output format
JavaScript Object Notation (.json)
Support applies to this conversion direction. Check the limits below for features that may change or be discarded.
Compare all supported formats and conversion limits →How to use XLSX to JSON
- Add your supported file using the chooser or drop zone.
- Review the settings and conversion limits before processing.
- Select Convert files, then download the result.
What to expect
- Enter the exact worksheet name; a missing selection lists available names. Formulas use cached values and fail if none exist. Dates remain Excel serial numbers. Formatting, charts and macros are omitted. JSON is an array of rows. 100,000 rows / 2 million cells maximum.
Engine: OOXML / fflate. The engine may need a first-use download. Your file stays in this browser session.Check conversion engines and offline requirements.
Conversion settings
These settings are available in the converter above.
- Worksheet name
- Enter the exact worksheet name, such as Sheet1. Leave blank once to list available names.
About this conversion
Is xlsx to json free?
Yes. This tool runs on your device without an account or a conversion fee.
Are files uploaded during conversion?
File processing happens locally in your browser. Engines may download their code on first use; your input files are not sent to a conversion server. Read how file privacy works.
What if conversion fails?
Check that the file matches a supported input, review the engine’s limitations and try a smaller representative file. If the engine cannot load, check its engine assets and browser requirements. The app reports failures without switching to a remote converter.
Continue with your output
These tools accept this tool’s output format. Each step has its own settings and fidelity limits.
- JSON to CSV
Convert JSON locally with an explicit structured-data mapping.
- JSON to TSV
Convert JSON locally with an explicit structured-data mapping.
- JSON to YAML
Convert JSON locally with an explicit structured-data mapping.
- JSON to XML
Convert JSON locally with an explicit structured-data mapping.
- Numeric data to HDF5
Create a single selected HDF5 dataset from a numeric matrix or an exported JSON envelope.
- Create TAR.GZ
Bundle selected files into a gzip-compressed USTAR archive.
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