Data & format utilities

Excel to JSON

Convert Excel or Google Sheets data to JSON. Copy-paste cells (tab-separated) or upload a CSV — auto-detects the delimiter. Free, private, in your browser.

Convert Excel to JSON

Copy cells from Excel or Google Sheets and paste below, or upload a CSV file.

Binary .xlsx files can't be read directly in the browser. Select the cells in your spreadsheet and copy-paste them here (Excel copies as tab-separated), or export to CSV and upload it — both convert perfectly.

What this Excel to JSON converter does

Converts copied spreadsheet cells to JSON
Uploads and converts CSV files
Auto-detects tab vs comma
Uses the first row as keys
Copy or download the JSON
Runs entirely in your browser

Common use cases

  1. 1Turning a spreadsheet into JSON
  2. 2Importing Excel data into an app
  3. 3Converting a Google Sheets range
  4. 4Seeding data from a spreadsheet
  5. 5Preparing config from a table
  6. 6Quick spreadsheet-to-code conversion

Related tools

CSV to JSONJSON to CSVCSV column mapperCSV deduplicatorCSV mergerCSV splitter

About Excel to JSON

Developers frequently need spreadsheet data as JSON. A true .xlsx file is a zipped bundle of XML that needs a large library to parse — but there's a simpler, fully client-side path that covers the real workflow.

When you copy cells from Excel or Google Sheets, they land on the clipboard as tab-separated text; a CSV export uses commas. This tool auto-detects which and converts to a clean JSON array of objects keyed by your header row — all in your browser, so your data stays private.

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FREQUENTLY ASKED QUESTIONS

Got Questions? We Have Answers.

Can it read a .xlsx file directly?

No — binary .xlsx needs a heavy library. Instead, copy the cells from Excel or Sheets and paste them (they arrive tab-separated), or export to CSV and upload it. Both convert perfectly.

How does it know the delimiter?

It auto-detects tab versus comma from the header row, so pasted spreadsheet data and CSV files both work.

Is my data uploaded?

No. Everything is processed in your browser.

What does the output look like?

A JSON array of objects keyed by your first (header) row.