JSON vs CSV: Which Data Format Should You Use?
F
FILES Team
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5 min read
JSON and CSV are the two most common plain-text data formats on the web. They look different, but they overlap a lot.
CSV — simple and flat
Comma-Separated Values is the simplest possible tabular format: one row per line, columns separated by commas. Perfect for spreadsheets and quick exports.
JSON — nested and structured
JSON supports nested objects and arrays, making it ideal for APIs and configuration. It is heavier than CSV but far more expressive.
When to use which
- Use CSV for flat tabular data you want to open in Excel.
- Use JSON when your data is hierarchical or consumed by code.
You can switch between them with our CSV → JSON and JSON → CSV converters.
Try it yourself
Open our free tools and put what you learned into practice.