File & Data Tools

File Tools

Convert between CSV, JSON, XML, and Excel formats — all processed locally in your browser with no file uploads required.

Convert a CSV to JSON
No uploads
Client-side processing
No sign-up
5Available tools
0Uploads
100%Private

Popular workflows

Common tasks

Start with practical workflows users run most in this category.

Convert a CSV to JSON

Paste or upload a CSV spreadsheet and get clean JSON output in seconds — headers become keys automatically.

Open workflow

Export JSON data as CSV

Turn a JSON array into a spreadsheet-ready CSV — pick your delimiter and download the file instantly.

Open workflow

Convert an Excel sheet to CSV

Upload an .xlsx or .xls file, choose the sheet you want, and download a clean CSV in one click.

Open workflow

Convert JSON to XML

Paste JSON and get well-formed XML output — or paste XML to get JSON back. Bidirectional conversion in one tool.

Open workflow

Build an Excel spreadsheet from CSV

Upload or paste CSV data and download a properly formatted .xlsx Excel file — give your sheet a custom name.

Open workflow

Full toolkit

All file tools

Pick a tool to get started — everything runs locally in your browser.

CSV to JSON
Convert CSV files or pasted table data to clean JSON — handles headers automatically.
Open tool
JSON to CSV
Convert a JSON array to CSV — paste or upload, download the spreadsheet-ready file.
Open tool
Excel to CSV
Convert any Excel spreadsheet (.xlsx or .xls) to CSV — select the sheet to export.
Open tool
CSV to Excel
Convert a CSV file to a properly formatted Excel .xlsx spreadsheet in one click.
Open tool
JSON ↔ XML
Convert between JSON and XML formats — paste, beautify, and copy the converted output.
Open tool

Guides & privacy

How to choose the right tool

  • Use CSV to JSON when your API or app expects JSON but you only have spreadsheet data.
  • Use JSON to CSV when you want to open API response data in Excel or Google Sheets.
  • Use Excel to CSV when collaborating with developers or importing data into a database.
  • Use JSON ↔ XML when integrating with legacy systems or SOAP APIs that require XML.
  • All conversions happen in your browser — no data is sent to a server, so you can safely process confidential spreadsheets.

Privacy and safety

All file conversions run client-side using JavaScript. Your spreadsheets, JSON payloads, and XML documents are never uploaded to UtilSnap servers — everything stays in your browser tab and is discarded when you close it.

Category FAQs

Is my data safe when using these tools?

Yes. All conversions happen in your browser using JavaScript. Your file data never leaves your device — it is not sent to UtilSnap servers.

Can I convert large CSV or Excel files?

The tools handle typical spreadsheet sizes well (tens of thousands of rows). Very large files (100 MB+) may be slow depending on your device.

What Excel formats are supported?

Both .xlsx (Excel 2007+) and .xls (older Excel) files are supported via the SheetJS library.

Does JSON to CSV support nested objects?

The tool flattens one-level JSON arrays to CSV. Deeply nested objects are converted to strings — for complex transformations, use a dedicated data pipeline tool.

Can I choose which sheet to export from Excel?

Yes. When you upload an Excel file with multiple sheets, you can select which sheet to convert from a dropdown menu.