📊 CSV to Excel

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Updated: 2026-07-11

📊 Input CSV Data

📊

Click to Upload CSV or drag & drop here

Supports .csv / .tsv / .txt

Or paste CSV data directly:

⚙️ Options

✅ Conversion Complete

📖 How to Use

Using CSV to Excel takes just three steps:

  1. Enter Your Input
    Type, paste, or upload your content into the input area.
  2. Configure Options
    Adjust available settings to customize your output.
  3. Get Results
    Click the process button. All processing is done locally in your browser — nothing is uploaded to any server.

❓ FAQ

How does CSV to Excel work?

This tool uses the SheetJS (xlsx) library to parse CSV content in your browser and convert it into Excel XLSX format. You can choose the delimiter (comma, tab, semicolon, etc.), configure header row detection, and generate a downloadable XLSX file with one click. All processing happens locally.

What CSV formats are supported?

Common CSV variants are supported: comma-separated, tab-separated (TSV), semicolon-separated, and custom delimiters. Quoted fields, UTF-8/GBK encoding, and BOM headers are all handled automatically.

Is my data secure?

Absolutely. All conversion is done locally in your browser. Your CSV data is never uploaded to any server. You can use this tool even while completely offline.

Is there a file size limit?

There's no hard limit, but very large CSV files (over 100K rows) may impact browser performance. SheetJS handles most common CSV sizes efficiently.

How do I download the result?

After conversion, click the 'Download Excel File' button to automatically download the XLSX file. The output filename defaults to the original CSV filename with .xlsx extension.