Convert CSV to JSON Online
CSV is the most common tabular data format for spreadsheet exports, database dumps, and data transfers, but most modern APIs, applications, and programming languages work with JSON. Converting CSV to JSON transforms each row into a JavaScript object with the header row as property names, producing a JSON array that is immediately usable in code. This tool parses CSV input correctly including quoted fields that contain commas, fields that span multiple lines, and various delimiter options. The output is a formatted JSON array of objects ready to use in your application, API request, or data processing pipeline. Paste CSV directly or upload a file, and get clean JSON output in seconds. The converter runs entirely in your browser so your data stays private.
FAQ
- Does the first row need to be headers?
- Yes. The converter uses the first row as property names for the JSON objects. Make sure your CSV has a header row with meaningful column names.
- What delimiters are supported?
- The standard comma delimiter is supported. Some tools also support tab-separated values — use the TSV to CSV converter first if your file uses tabs.
- How are empty cells handled?
- Empty cells are represented as empty strings ("") in the JSON output, preserving the structure of each row even when some fields have no value.