CSV to JSON & JSON to CSV
Convert tabular spreadsheet CSV data to JSON notation or format JSON arrays back to CSV schemas. Fast, offline, and secure.
Understanding CSV and JSON Formats
CSV (Comma-Separated Values) is the standard format for exchanging tabular data. It represents database tables or spreadsheet grids in flat text files where each line is a record and columns are separated by a delimiter like a comma or semicolon.
JSON (JavaScript Object Notation), on the other hand, is a hierarchical data structure widely used in web applications and API interactions. It supports nested objects, lists, boolean types, and key-value typing, which makes it far more expressive for application configurations than simple CSV files.
Offline Tabular Data Converter
Whether you are importing spreadsheet data into an application or exporting API query logs to Excel, you often need to convert between these formats. Using online converters can compromise data privacy if your CSV or JSON sheets contain client contact records, financial figures, or confidential keys.
Our **CSV to JSON & JSON to CSV Converter** handles this transformation locally in your browser. All parsing algorithms—including nested JSON structure flattening and double-quote escaped CSV parses—run offline inside your browser environment.
Flexible Options for Excel and TSVs
Different systems output tables with different separators. For instance, European versions of Microsoft Excel use semicolons (`;`) instead of commas, while Unix logs often output Tab-Separated Values (TSV).
This utility lets you easily switch between comma, semicolon, and tab delimiters, control header mappings, and toggle between pretty-printed JSON formatting and minified output.
Frequently Asked Questions
If a header row is present, the parser matches values in subsequent rows to the headers, creating an array of JSON objects. If headers are absent, it creates a simple two-dimensional JSON array.
We support Comma (,), Semicolon (;), and Tab (\t) delimiters, allowing you to convert standard CSVs, European semi-colon CSVs, and Tab-Separated Values (TSV) seamlessly.
No. The parsing and formatting are performed locally using client-side JavaScript within your browser session. Your data stays entirely on your computer.