Excel/CSV to JSON
100% Free · Client-Side
Convert CSV or Excel-exported data to JSON. Supports file upload, drag-and-drop, type inference, and configurable parsing options.
CSV Input
JSON Output
What is the CSV to JSON Converter?
The CSV to JSON Converter transforms comma-separated values (CSV) files; from Excel, Google Sheets, or any data export into structured JSON. Paste CSV text or upload a .csv file, choose your delimiter, and get a clean JSON array of objects with column headers as keys.
Common Use Cases
- Convert spreadsheet exports to JSON for use in JavaScript applications or APIs
- Transform CRM or analytics CSV exports into JSON for data processing pipelines
- Convert configuration CSVs to JSON for loading into a web application
- Prepare CSV data for import into a MongoDB or other NoSQL database
- Convert product catalog CSVs from e-commerce platforms to JSON for API ingestion
Frequently Asked Questions
1. What delimiters are supported?
The tool supports comma (,), semicolon (;), tab (\t), and pipe (|) as delimiters. Choose the one that matches your CSV format.
2. Are numbers automatically parsed or kept as strings?
The tool auto-detects numeric columns and converts them to JSON numbers. Boolean-looking values ("true", "false") are also parsed. Empty cells become null.