CSV to Excel — 무료 온라인 도구
즉시 사용, 무료, 회원가입 불필요. 파일은 로컬에서 처리되며 업로드되지 않습니다.
By the AllFileBox Team · Last updated: 2026-06-11
여기에 파일을 놓거나 클릭하세요
최대 파일 크기: 100MB • 파일은 기기를 떠나지 않습니다
CSV to Excel is a free online tool that turns plain CSV data into a formatted XLSX workbook in your browser, so columns line up in real cells you can sort, filter, and style in Excel.
Why convert CSV to Excel
A CSV is just comma-separated text, so opening it directly can leave numbers misread, leading zeros stripped, and columns crammed into one. Converting to a real XLSX workbook puts each value in its own cell with proper types, so the data is ready to sort, filter, chart, and format. It is the difference between raw text and a usable spreadsheet.
What the conversion does
The tool reads the CSV's rows and columns, detects the delimiter, and writes them into worksheet cells in the XLSX format that Excel, Google Sheets, and LibreOffice Calc all open natively. Headers become the first row, numbers are stored as numbers rather than text, and the structure is preserved exactly so nothing is lost in translation.
Handling tricky data
Real CSVs contain quoted fields, commas inside values, and line breaks within cells. A proper parser respects those quoting rules so a value like a full address stays in one cell instead of splitting. This careful parsing is why converting through a dedicated tool is more reliable than simply renaming the file extension to xlsx.
Private and local
CSV to Excel runs entirely in your browser. Your data is parsed and written into a workbook locally and is never uploaded or stored, so business records and personal data stay on your device. The conversion is quick even for large files and no server sees your rows.
사용 방법 CSV to Excel
- Open the CSV to Excel tool and add your CSV file.
- Let the tool parse the rows and columns in your browser.
- Wait for the XLSX workbook to build.
- Review the detected columns.
- Download the Excel file.
Open exported data cleanly
Open exported data cleanly
Convert a CSV export from an app into XLSX so every column lands in its own cell, ready to work with.
Prepare data for charts
Turn raw CSV into a workbook with proper number cells so Excel can build charts from it.
Share a tidy spreadsheet
Send colleagues an XLSX file instead of raw CSV so it opens formatted on any spreadsheet app.
| Aspect | CSV | XLSX |
|---|---|---|
| Storage | Plain text | Structured cells |
| Number types | All text | Real numbers |
| Formatting | None | Styles and formulas |
관련 도구
주요 기능 CSV to Excel
파일은 비공개로 유지됩니다
모든 처리는 브라우저에서 이루어집니다. 파일은 서버로 전송되지 않습니다.