JSON to CSV Converter
Flatten nested JSON arrays and objects into spreadsheet-ready CSV tables with dot-notation headers.
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Conversion Guide
JSON to Tabular CSV Flattening & Spreadsheet Export
Convert JSON objects and arrays into comma-separated value spreadsheets ready for Microsoft Excel, Google Sheets, or database imports.
- 01
Dot-Notation Flattening
Nested JSON structures (e.g. `user.address.city`) are automatically flattened into clean CSV column headers.
- 02
Formula Injection Protection
Cell values starting with `=`, `+`, `-`, `@` are automatically prefixed with a single quote to prevent spreadsheet code execution.
- 03
Custom Delimiters
Supports standard comma (`,`), tab (`\t`), semicolon (`;`), and pipe (`|`) delimiters.
Frequently Asked Questions
Answers about this tool.
Can I open the converted CSV file in Microsoft Excel or Google Sheets?
Yes. The output CSV strictly follows RFC 4180 rules and opens directly in Excel, Google Sheets, and LibreOffice.
What happens to nested JSON objects when converting to CSV?
Nested objects are flattened into dot-notation headers (`parent.child`). Arrays are serialized as JSON string values.
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