Guides
Converting Between CSV and JSON: A Complete Guide
Nathan Corbett··6 min read
CSV to JSON and JSON to CSV
Converting between CSV and JSON is a common developer task when working with data exports, APIs, and databases.
What is CSV?
CSV (Comma-Separated Values) is a plain text format for tabular data where each line is a row and commas separate columns.
Common Edge Cases
- Quoted Values with Commas — Values containing commas must be wrapped in quotes
- Quoted Values with Newlines — Some CSV files contain newlines inside quoted fields
- Type Coercion — CSV is text-only, so numbers come as strings
- Missing Values — Empty cells vs null values
- Special Characters — Quotes inside quoted fields need escaping
JSON to CSV
When converting JSON arrays to CSV: extract headers from first object keys, map each object to a row, handle special characters.
Free Conversion Tools
- CSV to JSON — Convert CSV files to JSON
- JSON to CSV — Convert JSON arrays to CSV
- CSV Viewer — View CSV in a table
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Nathan Corbett writes for CodeUtilityKit, where the team builds free, privacy-first developer tools that run entirely in your browser. Every guide is written and reviewed by developers who use these tools daily.