Excel to JSON Converter
Convert Excel files to JSON online
Convert Excel spreadsheets to JSON format. Transform tabular data into structured JSON for APIs, databases, and web applications. Free, instant, no signup.
How it works
Upload Excel
Choose the sheet with rows you want as JSON records.
Map headers
Column headers become JSON keys and rows become objects.
Download JSON
Validate structure, data types, and sample records.
Frequently asked questions
About Excel to JSON
Excel to JSON converts spreadsheet rows into structured data for apps, APIs, test fixtures, migrations, configuration files, and developer handoff. It works best when the first row contains clean field names and each row represents one record. Spreadsheet data is often messier than JSON expects. Blank headers, duplicate column names, merged cells, dates, booleans, and numbers stored as text can create surprises. Clean the sheet before conversion. After export, validate the JSON and inspect a few records before using it in code or imports.
Updated June 2026: Added guidance for converting Excel rows to JSON for APIs, apps, fixtures, headers, data types, and nested data limits.
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