Turn messy CSV into useful data.

Paste a spreadsheet, clean it up, and export JSON, Excel, TSV, or a Markdown table—without sending the file anywhere.

Your data never leaves your computer

CSV input

0 rows · 0 columns
Paste, choose, or drop a CSV file here.

Converted output

JSON
Output updates as you type.
Clean rows

Table preview

Waiting for data
Add CSV data to preview rows and columns.

From raw file to ready-to-use

  1. Add your CSV

    Paste text, pick a file, or drag it into the input area. Commas, semicolons, tabs, and pipes are detected automatically.

  2. Clean as you convert

    Trim stray spaces, remove duplicate records, and drop blank rows or columns before export.

  3. Take the result

    Copy text output or download a properly formatted JSON, TSV, Markdown, or Excel file.

CSV converter FAQ

How do I convert CSV to JSON?

Paste or upload your CSV, choose JSON under “Convert to,” then copy the result or download the .json file. The first row becomes the object keys.

Can I convert CSV to Excel?

Yes. Choose Excel (.xlsx), then download the workbook. Values are exported safely as text so IDs, postal codes, and leading zeros are preserved.

Which CSV delimiters are supported?

The converter detects commas, semicolons, tabs, and pipe characters. You can override the detected delimiter in the settings.

Is my CSV uploaded?

No. Parsing, cleaning, conversion, and file generation happen in your browser. Your data never leaves your computer.