What if my CSV doesn't have a header row?

The first row is always read as the header row. If your file has no real headers, the first data row will be used as column names, so it is worth adding one before uploading.

Are number and currency values kept as numbers, or strings?

The workspace infers a real type per column (number, currency, date, text) before export, so numeric-looking columns export as real JSON numbers rather than quoted strings.

Does this use AI, like the PDF and image tools?

No. CSV is already a structured format, so it's parsed deterministically, the same way JSON, XLSX, and XLS are.

Convert CSV to JSON Online

Convert a CSV file into clean, structured JSON: deterministic parsing, no AI model involved, ready for a script, an API request, or a database import.

Drop your file here

or browse your computer

CSV · up to 3 MB

Deterministic parsing, not guessed by an AI model, so the same input always produces the same output
The first row is read as column headers automatically
Each subsequent row becomes one JSON object keyed by those headers
Review and edit every value in the workspace before exporting
Upload your CSV: A .csv file with a header row.
Automatic structure parsing: Headers become keys; each row becomes one JSON object.
Export JSON: Download as .json or copy straight to your clipboard.
What if my CSV doesn't have a header row? The first row is always read as the header row. If your file has no real headers, the first data row will be used as column names, so it is worth adding one before uploading.
Are number and currency values kept as numbers, or strings? The workspace infers a real type per column (number, currency, date, text) before export, so numeric-looking columns export as real JSON numbers rather than quoted strings.
Does this use AI, like the PDF and image tools? No. CSV is already a structured format, so it's parsed deterministically, the same way JSON, XLSX, and XLS are.