CSV to JSON Converter
Upload your CSV or paste data, get a JSON array of objects. Auto-detects delimiters. 100% client-side — your data never leaves your browser.
Drag & drop your CSV here
or click to browse · CSV/TSV files up to 10 MB
Preview (first 5 rows)
Conversion Complete!
What is CSV to JSON Conversion?
CSV to JSON conversion transforms comma-separated value files into structured JSON arrays. FreeCVT converts entirely in your browser.
Understanding the Formats
CSV Format
CSV is a plain-text format for tabular data where values are separated by commas.
JSON Format
JSON is a lightweight data interchange format using key-value pairs.
When to Use This Converter
- Import CSV data into web applications
- Convert spreadsheet data for API consumption
- Transform database exports for JavaScript processing
Limitations
- Nested data structures in CSV are not supported
- Very large files may be slow to process
- Character encoding issues may occur with special characters
Why Freecvt?
100% Private
Your data is processed in your browser. Nothing is uploaded to any server.
Lightning Fast
Conversion happens instantly in your browser. No waiting for uploads.
Works Everywhere
Runs on any device with a modern browser. No installation required.
Frequently Asked Questions
What delimiter is supported?
Comma, tab, and semicolon delimiters are auto-detected.
Can I paste CSV data directly?
Yes! Use the text area to paste your CSV data.
How are quoted fields handled?
Fields enclosed in quotes are parsed correctly.
Is my data uploaded?
No. Everything happens in your browser.