Convert CSV to JSON — Batch CSV to JSON Converter for Windows

APIs, NoSQL databases, and web applications expect data in JSON. Your data sits in CSV files. Copying values by hand or writing one-off scripts wastes time and introduces errors. Total CSV Converter converts CSV files to well-formed JSON in batch — hundreds of files in one run — with full control over delimiters, encoding, and structure.

• Converts each CSV file to a JSON array of objects with column headers as keys
• Processes an entire folder of CSV files in a single batch
• Detects delimiters automatically (comma, semicolon, tab) or lets you set one manually
• Handles UTF-8, ANSI, Unicode, and other encodings correctly
• Includes a command-line interface for scripted and scheduled conversions
• Works 100% offline — no files uploaded anywhere
• 30-day free trial, no email or credit card required

Download Total CSV Converter and start converting CSV to JSON today.

 

CSV vs JSON: What Is the Difference?

CSV (Comma-Separated Values) is a plain-text format where each line is a row and values are separated by a delimiter — usually a comma or semicolon. CSV carries no data types, no hierarchy, and no metadata. It is the default export format for databases, spreadsheets, and reporting tools.

JSON (JavaScript Object Notation) is a structured text format that stores data as key-value pairs and arrays. JSON supports nested objects, explicit data types (strings, numbers, booleans, nulls), and is the native data format for REST APIs, NoSQL databases (MongoDB, CouchDB), and modern web applications.

When you convert CSV to JSON, each row becomes a JSON object where column headers serve as keys and cell values become the corresponding values. The result is an array of objects that any API, database import tool, or front-end application can consume directly without parsing.

How to Convert CSV to JSON

• Step 1. Launch Total CSV Converter. The left panel shows a folder tree for quick navigation.
• Step 2. Browse to the folder that contains your CSV files. The file list in the center displays all supported files.
• Step 3. Check the files you want to convert. Use Check All to select every file in the folder for batch conversion.
• Step 4. Click JSON in the format toolbar at the top of the window.
• Step 5. In the conversion wizard, set the delimiter (comma, semicolon, tab, or custom), verify encoding, and choose a destination folder for the output files.
• Step 6. Press Start. The converter processes all selected files and saves JSON output to your chosen folder.

Each CSV file becomes a separate .json file containing an array of objects. Original CSV files remain untouched. The first row of the CSV is used as property names in each JSON object.

Command-Line Conversion

Total CSV Converter includes a command-line interface for converting CSV files without the GUI. Example:

CSVConverter.exe C:\Data\export.csv C:\Output\export.json -c JSON -SepChar ;

Wrap this command in a .bat file or a Windows scheduled task to automate recurring conversions. This is useful for data pipelines — for example, automatically converting nightly database exports from CSV to JSON for an API or a NoSQL database import.

Why Use Total CSV Converter?

Smart delimiter detection. The converter auto-detects the delimiter in your CSV files (comma, semicolon, tab, pipe). You can also set it manually for non-standard files. This ensures every value maps to the correct JSON key.

Batch processing. Select hundreds of CSV files and convert them all to JSON in one run. Each file becomes a separate .json file. No need to process files one by one with scripts or online tools.

Correct encoding. Handle CSV files in any encoding: UTF-8, ANSI, Unicode, and more. The converter preserves accented characters, CJK text, and special symbols that break when handled by basic parsers.

Valid JSON output. The output is well-formed JSON that passes any validator. Strings are properly escaped, special characters are handled, and the structure is consistent across all files in a batch.

No coding required. Total CSV Converter is a desktop application with a GUI wizard. Developers who prefer scripting can use the built-in command line instead — both produce the same output.

10+ output formats. Besides JSON, convert CSV files to XLS, XLSX, PDF, HTML, XML, DBF, TXT, and more — all from the same program.

Online Converters vs Desktop Converter

Feature	Online Tools	Total CSV Converter
File size limit	5–50 MB typical	No limit
Batch conversion	One file at a time	Unlimited
Privacy	Files uploaded to cloud	100% offline
Delimiter control	Auto only	Auto + manual + custom
Encoding support	UTF-8 only	UTF-8, ANSI, Unicode, etc.
Automation	Manual only	Built-in command line
Pricing	Subscription or per-file	One-time $49.90

Windows 7/8/10/11 • 30-day free trial

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Total CSV Converter Customer Reviews 2026

Rate ItRated 4.7/5 based on customer reviews

"We get daily CSV exports from a legacy ERP system and need to push them into a REST API. Total CSV Converter handles the batch conversion in a scheduled task every night. No custom scripts, no maintenance."

Daniel Ortiz Back-End Developer

"I convert hundreds of CSV report files to JSON for our MongoDB import pipeline. The delimiter auto-detection is a lifesaver — our files come from different sources with different separators. Everything just works."

Sarah Lindgren Data Analyst, NordTech AB

"Solid tool for bulk CSV to JSON conversion. The command line is straightforward and the encoding handling is reliable. Would appreciate an option to define nested JSON structures, but for flat table-to-JSON it does the job perfectly."

Marcus Chen Systems Administrator

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