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Convert Excel to JSON Online
Turn worksheet rows into JSON records for APIs, fixtures, and app imports without uploading the workbook.
Problem
Spreadsheet data needs to become JSON, but manual copy-paste creates type and header mistakes.
What to do
A converter maps sheet headers to JSON keys and each row to an object. Review the generated JSON before using it in an app.
- 1Upload the workbook.
- 2Select the worksheet and header row.
- 3Copy or download the JSON output.
Use the browser tool
Excel to JSON Converter is a free, browser-based tool that helps you convert between formats. Read .xlsx and emit JSON per sheet (objects or arrays). It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.
People also ask
- How do I convert Excel to JSON?
- Paste your Excel into the input panel (or drop a file), adjust the options if needed, then copy or download the JSON from the output panel. The conversion happens instantly in your browser.
- Is my data uploaded or stored anywhere?
- No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
- Is Excel to JSON Converter free?
- Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.