Convertisseur CSV en JSON
Convertir CSV ⇄ JSON
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L’outil et les instructions de cette page sont en anglais pour le moment. Il fonctionne de la même façon : tout se passe dans votre navigateur.
Working with Excel or Google Sheets? Save or download the sheet as CSV first (File › Save As › CSV UTF-8).
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How to convert CSV to JSON
- Paste your CSV or JSON, or open a file.
- Check the options: separator, column names, number conversion.
- Copy the result or download it.
Good to know
- The separator (comma, semicolon, tab or pipe) is detected automatically.
- Quoted values, quotes inside values and line breaks inside cells are handled correctly.
- Numbers and true/false become real JSON values; values like 007 and very long numbers stay text so nothing is lost.
- JSON to CSV flattens nested objects (address.city) and makes a download that opens correctly in Excel, accents included.
- For Excel files, save them as CSV first (File › Save As › CSV UTF-8).
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Nothing you type or paste is sent anywhere. It is processed on your device and disappears when you close the page.
Questions fréquentes
Can I convert an Excel file directly?
Not .xlsx files. Save the sheet as CSV in Excel or Google Sheets first; that takes a few seconds.
Why do my European CSV files work?
Files with semicolons (common where the comma is the decimal separator) are detected automatically.