CSV to JSON

Parse CSV with a header row into a JSON array of objects. Paste CSV data and click Run to produce formatted JSON.

  • Runs entirely in your browser
  • No data stored or sent to a server
  • Free forever — no signup
  • Instant conversion

Input and Output

Use the interactive encoder and decoder on this page to process your text.

Learn more about CSV to JSON conversion

How to Convert CSV to JSON

CSV to JSON

When to Convert CSV to JSON

Convert CSV to JSON when importing spreadsheet exports into APIs, seeding databases, or transforming tabular data for JavaScript applications.

Real-World Examples

Header row id,name,active becomes object keys

Quoted fields with commas parsed correctly

Output formatted as a JSON array of row objects

Common Mistakes

  • CSV without a header row produces meaningless keys
  • Semicolon-separated European CSV pasted without conversion
  • Expecting automatic type coercion — all cell values are strings

Developer Tips

  • Ensure the first row contains column names
  • Cast types in application code after conversion if you need numbers or booleans

Frequently asked questions

Does the CSV need a header row?

Yes. The first row is used as JSON object keys for each subsequent row.

Are numeric values typed as numbers?

No. All CSV cell values are strings in the JSON output.

What delimiter is supported?

Comma-separated values with standard double-quote escaping.