JSON to CSV
See flatten and convert JSON arrays into CSV format. Perfect for importing data into Excel or Google Sheets.
Last updated: April 28, 2026
Waiting for input...Tool Settings
Nested objects are automatically flattened using dot-notation (e.g., "user.address.city"). This ensures your spreadsheet has a consistent column structure.
All processing happens locally in your browser. Large files are handled in memory and never uploaded to any server.
JSON to CSV — No Uploads Required
Transform your structured JSON data into a flat CSV format ready for spreadsheet analysis. Our converter intelligently flattens nested objects using dot-notation (e.g., 'user.name') and handles arrays of objects by creating a consistent header row based on all available keys in the dataset.
Why This Tool Exists
What makes this useful — and why I built it this way.
Spreadsheet Ready Output: Convert list formats of JSON into grid CSV structures.
Auto Flatten Logic: Converts nested objects into clean database columns.
CSV Customizations: Set custom separators, line endings, and header formats.
When You'd Use This
Real situations where this tool saves the day.
Data Analysis: Convert database API outputs to open in Excel or Sheets.
Reporting Creation: Build flat reports from complex nested web databases.
Migration Prep: Prepare modern JSON feeds to import into legacy databases.
Using JSON to CSV
It's straightforward — here's how it works.
Paste an array of JSON objects into the converter.
Configure flattening options (e.g., depth, separators).
Preview the CSV table to ensure columns are correct.
Download the .csv file for use in your spreadsheet software.
Questions People Ask
Honest answers about how this works.
How are nested objects handled?
Great question. Nested objects are flattened by default. For example, { 'person': { 'name': 'John' } } becomes a column named 'person.name'.
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