Choose input
Paste CSV and select its delimiter.
CSV to JSON
Convert CSV rows into JSON without changing cell values.
Last reviewed: · Testing methodology
How to use
Choose comma, semicolon or tab and whether the first row contains headers. Quoted cells and multiline values are supported; values remain strings.
Set options
Choose header handling and convert.
Use the result
Inspect, copy or download JSON.
Examples and checks
Worked example
Use the settings below and inspect the saved result.
- Input
- name,note "Alice, A","line one line two"
- Output
- [{"name":"Alice, A","note":"line one\nline two"}]
Limits and questions
Inputs are processed in your browser. Analytics and advertising can make separate network requests.
Supported behavior
Choose comma, semicolon or tab and whether the first row contains headers. Quoted cells and multiline values are supported; values remain strings.
Limits and review
1 million characters and 10,000 data rows. Duplicate or empty headers and inconsistent row widths are rejected. Numbers remain strings.
Verification
Review record: 2026-08-26. See the documented behavior and limitations above, and the testing standards for the scope of review.
Testing methodologyWhen to use another workflow
Use Python, pandas, or a database import for huge files, encoding detection, schema inference, validation, and repeatable ETL.
Frequently asked questions
- What are the limits?
- 1 million characters and 10,000 data rows.
- What should I check before using the output?
- Duplicate or empty headers and inconsistent row widths are rejected. Numbers remain strings.