Free · No signup · Private — runs in your browser

XLS to JSON

Turn an old-format .xls spreadsheet into clean JSON for APIs and code. Your header row becomes the keys and every row becomes an object — all processed locally in your browser.

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Drop your .xls file here or click to browse

Converted on your device — nothing is uploaded.

One file is free — drag in several to batch-convert with Pro.

Need to edit, not just convert? Open the full Gridoly editor →

How it works

1Add your .xls fileDrag a legacy .xls file onto the box, or click to choose one.

2We convert itThe first row supplies the keys; each row becomes a JSON object.

3Download JSONDownload a formatted .json array, ready for your project.

Frequently asked questions

What does the JSON look like?

An array of objects, with property names taken from the first row of the sheet.

Does it read the old .xls format?

Yes — both .xls and .xlsx are supported.

Is it private?

Yes — the file never leaves your browser.

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