Convert CSV to JSON Online
Transform tabular CSV data to structured JSON format. Perfect for APIs.
CSV Input
JSON Output
Other conversions
What is CSV to JSON conversion?
CSV is the standard format for exporting data from Excel and databases, but JSON is needed for modern APIs and web applications. This conversion transforms each row into an object with properties named after the headers.
How to convert CSV to JSON?
- Paste your CSV with headers in the first row
- Conversion is automatic - each row becomes a JSON object
- Copy the JSON array to use in your application or API
Converter features
- Header detection: First row is used to name properties
- Array of objects: Each CSV row becomes a JSON object
- Delimiter handling: Supports commas, semicolons, and tabs
- Valid JSON: Output is valid JSON ready to use
Frequently Asked Questions
What delimiter is expected in the CSV?
The converter automatically detects whether the separator is comma (,), semicolon (;), or tab. If you have issues, make sure the delimiter is consistent throughout the file.
How are numeric values handled?
Values that look like numbers are kept as strings in JSON to preserve formats like postal codes with leading zeros. You can process them later as needed.
What happens with empty cells?
Empty cells are converted to empty strings ("") in JSON. You can filter them or replace with null as needed.
Does it work with CSV exported from Excel?
Yes, it works with CSV exported from Excel, Google Sheets, LibreOffice, and most applications. Note that different locales may use semicolons (;) instead of commas.