CSV ↔ JSON Converter

Reference

CSV & JSON

CSV (Comma-Separated Values) is a plain-text format where each line represents a row and values are separated by a delimiter (usually a comma). The first row typically contains column headers. It is widely used for spreadsheets, database exports, and data interchange between applications.

JSON (JavaScript Object Notation) is a lightweight data-interchange format that represents structured data as key-value pairs and arrays. It is the standard format for REST APIs, configuration files, and web data exchange. This tool converts between both formats, mapping CSV columns to JSON object keys.

Use cases

Spreadsheet-to-API — export data from Excel or Google Sheets as CSV, then convert to JSON for REST API consumption. Database export — transform CSV dumps from MySQL or PostgreSQL into structured JSON for downstream tools. Data pipeline debugging — quickly inspect tabular data in JSON form to validate transformations. Log analysis — convert CSV-formatted log files to JSON for easier parsing with jq or JavaScript. Config migration — move flat CSV configuration data into JSON-based config systems.

Delimiters and regional formats

Not all CSV files use commas. European locales (Germany, France, Italy) often use semicolons (;) because the comma is the decimal separator in those regions. TSV (tab-separated values) is common in bioinformatics and academic datasets. Pipe-delimited (|) files appear in mainframe exports and EDI data. This tool supports all four delimiters — select the correct one before converting.

Privacy

All conversion runs 100% in your browser. No data is sent to a server.