XLS to XLSX

Unavailable: this tool needs PhpSpreadsheet with a tested ToolHub adapter.

Private Processing: Up to 10 files • 5 MB each • 25 MB per job • Expires in 1 hour
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or Choose Files from your device
Accepted: XLS Max 5 MB each Paste image supported (Ctrl+V)

Unavailable: this tool needs PhpSpreadsheet with a tested ToolHub adapter.

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CSV to XLSX

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CSV to JSON

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Convert UTF-8 comma-separated tables to JSON objects. Requires unique column headings; values remain strings.

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JSON to CSV

JSON to CSV

Convert a flat JSON array of objects to UTF-8 CSV. Nested values are rejected and spreadsheet formula triggers are escaped.

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