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How to Use the CSV ⇄ Excel Converter

2026-11-124 min readBy Apex Tool Station Team

How to use the CSV ⇄ Excel Converter — step-by-step guide

Convert CSV files to Excel XLSX and Excel spreadsheets to CSV, with sheet selection and preview.

100% free No signup Works in your browser

Open the CSV ⇄ Excel Converter tool

1. What is the CSV ⇄ Excel Converter?

Turn CSV exports from apps and websites into proper Excel files, or save any sheet of an Excel workbook as CSV or JSON. Preview the first rows before downloading and choose the sheet if the workbook has several. Files are processed locally with the SheetJS library.

2. How to use the CSV ⇄ Excel Converter

Here is the whole process, step by step. It takes less than a minute from opening the tool to seeing your result.

  1. 1Open the tool and use the on-screen controls — everything runs in your browser.
  2. 2Copy or download your result with the buttons under the output.

Your result updates as you type — there is nothing to press and nothing to wait for.

Everything runs in your browser — your files and text never leave your device.

3. What you can do with it

  • Save your result with the "Download as Excel (.xlsx)", "Download as CSV", "Download as JSON" buttons under the tool.

4. Tips for best results

  1. Your text never leaves your device — The tool runs entirely in your browser using JavaScript. Nothing is uploaded, so you can paste private documents without worry. That also means there is no account to create and no file to upload.
  2. It works on your phone too — Open the tool in any modern browser on Android or iPhone. The layout adjusts to the screen and everything works the same way on a small screen as on a desktop.
  3. Save your result before you leave — Use the "Download as Excel (.xlsx)" button to keep a copy.
Why use the CSV ⇄ Excel Converter

Frequently asked questions

Is the CSV ⇄ Excel Converter free?

Yes. The CSV ⇄ Excel Converter on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.

Are my files or data uploaded to a server?

No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.

Does it work on mobile?

Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.

Apex Tool Station TeamFree Online Tools

The team behind Apex Tool Station. We build free online tools that run in your browser — no signup, no uploads, no watermarks.

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Try the CSV ⇄ Excel Converter

The CSV ⇄ Excel Converter is free, with no signup and no watermark. Open it and try it now.

Open the CSV ⇄ Excel Converter tool

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