CSV to JSON & JSON to CSV Converter

Bi-directional tabular data converter between CSV/TSV spreadsheets and structured JSON arrays with custom delimiter support.

Local Browser Execution: Spreadsheets, customer records, and confidential datasets are converted entirely in local memory with zero server transmission.

RFC 4180 Tabular Tokenizer & Serializer

Understanding Your Results

Auto-detects column headers, infers numeric and boolean types, and handles custom delimiters (commas, tabs, semicolons, pipes).

Practical Guidance & Next Steps

Ensure the first line contains unique column header names. Use the delimiter dropdown if parsing European semicolon CSVs.

What is this?

How does it work?

Why use it?

Technical Scope & Calculation Limitations

Deeply nested JSON objects are flattened during JSON-to-CSV serialization.

Frequently Asked Questions

Complementary Utilities

Related Tools for Your Workflow

All Developer Tools tools

developer

Popular

JSON Formatter & Beautifier

Format, beautify, indent, minify, and inspect JSON data with syntax highlighting, collapsible nodes, and error reporting.

HTML/CSS/JSStatic Utility

developer

Essential

JSON Validator & Linter

Validate JSON syntax in real time with line and column error indicators, character offsets, and auto-fix capabilities.

HTML/CSS/JSStatic Utility

developer

Popular

Base64 Encoder (Text & Files)

Convert plain text, UTF-8 strings, images, and files into standard Base64 or Data URI format.

HTML/CSS/JS Static Utility

developer

Popular

Base64 Decoder (Text & Files)

Decode Base64 encoded strings and Data URIs back to clean UTF-8 text, inspect hex representation, or download decoded files.

HTML/CSS/JS Static Utility