How to Convert Excel to JSON Online (Free, No Upload)

Convert Excel to JSON in seconds, right in your browser, with no install and no account.

Spreadsheets hold a lot of useful data, but apps and APIs read JSON. Copying cells by hand into JSON is slow and easy to get wrong.

The converter reads the first sheet of your .xlsx file, uses the header row as key names, and writes one JSON object per row, with numbers, dates and true/false values detected.

Your file is processed in your browser and is not uploaded to a server, so it is safe to use with customer or business data.

Open the Excel to JSON converter

How to use the Excel to JSON converter: step by step

1. Open the Excel to JSON converter.
2. Drop your Excel file into the box.
3. Click Convert.
4. Copy the result, or click Download to save the JSON file.

When to use the Excel to JSON converter

• Loading spreadsheet data into a web app
• Sending Excel data to an API
• Creating JSON test data from a spreadsheet
• Moving a lookup table into a config file

Tip: Make sure the first row of the sheet holds the column names, because they become the JSON keys.