CSV to Excel Converter
Convert CSV files to Excel workbooks.
CSV files are read and converted to Excel entirely in your browser. Type detection only applies to numbers and ISO date formats.
About This Tool
The CSV to Excel tool converts CSV (.csv, .txt) files into Excel format. You can set the character encoding and delimiter, choose whether the first row is a header, and control how data types are handled. A table preview lets you verify the result before saving, making it easy to open and edit CSV data in Excel.
How to Use
Select a CSV file
Upload the CSV file (.csv, .txt) you want to convert to Excel. Once selected, you can see the file name, size, and the encoding you selected.
Configure conversion options
Pick the encoding and delimiter that match your file, then choose whether the first row is a header and how data types are handled (Auto or Text).
Preview and download
Check that rows and columns are split correctly in the table preview, then click Download Excel to save the file.
Key Features
Multiple character encodings
Choose from UTF-8, CP949, Shift-JIS, GBK, Big5, Windows-1252, and more to prevent character corruption in Korean, Japanese, and other scripts.
Selectable delimiter
Specify the delimiter actually used in the file — Comma, Semicolon, Tab, or Pipe — to split data into the correct columns.
Header and data type options
Decide whether the first row becomes Excel column headers or is excluded from the output, and choose between Auto or Text type conversion.
Table preview
Verify the row and column count and confirm the data is split correctly in the preview table before converting. Wide files can be browsed with horizontal scrolling.
Download-ready status
The status bar at the bottom shows when the file has been analyzed and is ready to download.
In-browser processing
Your CSV file stays in your browser — nothing is sent to a server.
Use Cases
Editing CSV data in Excel
Convert received CSV data into an Excel workbook to continue with sorting, filtering, and formulas.
Fixing broken Korean characters
Select the encoding that matches the CSV file so Korean characters and special symbols display correctly.
Cleaning up mis-split CSV columns
Choose the delimiter actually used in the file — comma, tab, or semicolon — to convert data into the correct column structure.
Reviewing transaction and log data
Turn row-and-column CSV data such as transaction records, system logs, and statistics into an Excel table for review.
Working with exported business data
Convert CSV downloads from shopping platforms, accounting software, and admin panels into Excel files for further work.
Frequently Asked Questions
Why do I need an encoding option?
CSV files represent Korean characters and special characters differently depending on the encoding used when they were saved. If characters look broken, switch to the encoding that matches the file.
What is a delimiter?
A delimiter is the character that separates column values within each row. Standard CSV uses a comma, but some files use semicolons, tabs, or pipes instead.
What does the header option do?
When enabled, the first row of the CSV is used as Excel column names. When disabled, the first row is excluded from the output.
How does automatic type detection work?
Values that can be identified, such as numbers and ISO-format dates, are automatically converted to numeric or date data. Other values are generally kept as text.
Can numbers be converted differently than expected?
Yes. Values like codes with leading zeros, long numbers, fractions, or date-like strings can be misinterpreted during automatic type detection. If you have such data, switch the type option to Text.
Why does the preview show all data in a single column?
The delimiter you selected likely differs from the one actually used in the file. Try changing to a different delimiter such as Comma, Tab, or Semicolon.
What should I do if Korean text looks broken?
Switch to UTF-8, CP949, or another encoding used by the program that created the file, then check the preview.
Are CSV formulas or formatting converted to Excel?
No. CSV files typically store only cell values, so Excel formatting such as fonts, colors, merged cells, and formulas is not included. The converted Excel file is also value-based.
Is the output split into multiple sheets?
No. One CSV file is converted into a single Excel sheet (Sheet1).
Is the preview the same as the downloaded Excel file?
The preview reflects the encoding, delimiter, header, and type options you selected. How Excel displays dates and numbers may vary slightly depending on its settings.
Is my CSV file sent to a server?
No. All processing happens locally in your browser. Your CSV file and conversion results are never transmitted to a server.
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