CSV to JSON & JSON to CSV Converter - Free Online Tool
Convert between CSV and JSON formats instantly. Bidirectional converter with support for data type detection and Excel export.
CSV to JSON Converter
Convert CSV data to JSON format. Automatically detects and parses numbers, booleans, and null values.
- Converts CSV to JSON array of objects
- Auto-detects data types (numbers, booleans, strings)
- Handles quoted values with commas
- Header row becomes JSON keys
- Copy JSON to clipboard
About CSV/JSON Converter
Convert between CSV and JSON formats instantly. Bidirectional converter with support for data type detection and Excel export. CSV/JSON Converter is a free online tool by NeXiilo — no sign-up required, and everything runs privately in your browser.
Whether you use it daily for work or occasionally for a quick task, CSV/JSON Converter gives you fast, accurate results without uploading your data anywhere.
How to Use CSV/JSON Converter
- Open the CSV/JSON Converter above — paste or enter your input.
- Adjust any options to match what you need.
- Get instant results right in your browser.
- Copy or reuse the output wherever you need it.
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Frequently Asked Questions
Can I convert CSV to JSON?
Yes, switch to CSV to JSON mode and paste your CSV data. The tool will automatically convert it to a JSON array of objects with proper data type detection.
Can I convert JSON to CSV?
Yes, switch to JSON to CSV mode and paste your JSON array. The tool will convert it to CSV format with automatic header detection from object keys.
What CSV format is supported?
The tool supports standard CSV format with comma separators. It handles quoted fields, escaped characters, and various line endings (Unix, Windows, Mac).
Does the tool detect data types?
Yes, when converting CSV to JSON, the converter auto-detects data types. Numbers are converted to numbers, "true"/"false" to booleans, empty values to null, and other values to strings.
How do I handle special characters?
The tool properly handles quoted fields and escaped characters according to CSV standards. Values with commas, quotes, or newlines within quotes are handled correctly in both directions.