Excel to CSV — 무료 온라인 도구
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By the AllFileBox Team · Last updated: 2026-06-11
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Excel to CSV is a free online tool that converts an XLSX spreadsheet into plain comma-separated CSV in your browser, the universal format that databases, scripts, and import tools all accept.
Why convert Excel to CSV
Many systems cannot read the rich XLSX format and expect plain CSV instead: database importers, command-line scripts, data pipelines, and countless web apps all ask for it. CSV strips a spreadsheet down to raw rows and columns of text, which is the lowest common denominator that almost every program can parse, making it ideal for moving data between tools.
What is kept and what is dropped
Conversion keeps the cell values, the rows, and the columns, which is everything a data import needs. It deliberately drops spreadsheet-only features that CSV cannot represent, such as formatting, colors, multiple sheets, charts, and formulas. Formulas are exported as their computed results, so the CSV contains the values you see rather than the underlying calculations.
Single sheet output
Because CSV is a flat format, it holds one table, not a multi-sheet workbook. The tool exports the active or first sheet to CSV; to convert several sheets you export them one at a time. This is expected behavior for CSV and matches what import tools want, which is a single clean table of values.
Private and local
Excel to CSV runs entirely in your browser. Your workbook is read and written to CSV locally and is never uploaded or stored, so business and personal data stay on your device. The conversion is fast even for large sheets and no server sees your data.
사용 방법 Excel to CSV
- Open the Excel to CSV tool and add your XLSX file.
- Let the tool read the sheet in your browser.
- Wait for the CSV to be generated.
- Review the comma-separated output.
- Download the CSV file.
Import into a database
Import into a database
Convert a spreadsheet to CSV so a database or admin tool that requires plain text can import the rows.
Feed a script
Export Excel data to CSV so a command-line script or data pipeline can read it cleanly.
Move data between apps
Turn an XLSX into CSV to upload into a web app that only accepts comma-separated files.
| Item | In XLSX | In CSV |
|---|---|---|
| Cell values | Yes | Kept |
| Formatting | Yes | Dropped |
| Formulas | Yes | Exported as values |
| Multiple sheets | Yes | One sheet per file |
관련 도구
주요 기능 Excel to CSV
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