Excel to CSV - Convert XLSX Files Free
Convert Excel spreadsheets to CSV
Convert .xlsx or .xls spreadsheets to plain .csv in one click. The first worksheet becomes your CSV — perfect for imports, databases, and data tools. Everything runs in your browser.
100 MB max per file
Drag & drop your files here
or browse from your device
Excel file · up to 100 MB each
100% FreeNo SignupFiles Never Leave Your Device
How to use this tool
Step 1: Upload your file
Drag & drop your file or click to browse. Files are processed locally in your browser and never uploaded.
Step 2: Adjust & process
Choose your settings and run the tool with one click.
Step 3: Download the result
Download your file instantly. Free forever, no signup, no watermark.
Why 123ToolKit?
| 123ToolKit | Typical online tools |
|---|---|
| Runs in your browser — files never uploaded | Uploads your files to cloud servers |
| Free forever | File size limits |
| No signup | Account required |
Excel to CSV — FAQ
Upload your .xlsx file and the tool converts it to CSV instantly in your browser. Download the CSV file when it is ready.
CSV stores plain data only, so colors and formulas are not preserved. Text, numbers, and dates carry over cleanly.
Yes. Conversion runs entirely in your browser, so your spreadsheet never leaves your device.
The tool handles modern .xlsx files. If you have an older .xls file, save it as .xlsx in Excel first.
No. There is no signup and no watermarks - just upload, convert, and download.
Many databases, import tools and online services only accept CSV files as their upload format. Converting turns your spreadsheet into exactly that lightweight text format, so product lists, contacts and inventories import cleanly. The first worksheet is the one converted, so arrange your workbook before you start.
Yes — Upload your list as XLSX or XLS, convert it to CSV, then upload that clean text file to your shop or service. Because CSV stores values only, numbers, names and prices arrive without any formatting baggage. Give the file a quick check afterwards, before running the real import.
The first worksheet of your workbook is always the one converted; other sheets are not included. If you need a different sheet, move it to the first position or save it as its own file and convert that separately. This keeps every CSV clearly tied to a single sheet and your imports predictable.
That is not an error but the nature of the CSV format, which stores plain values in rows and columns only. Formulas appear as their calculated results, while colors, fonts and borders are dropped. Keep your Excel file as the formatted master copy and use the CSV purely for importing.
CSV wraps values containing commas or quotes in quotation marks following fixed rules, so columns cannot shift. Still, open the result before importing and check dates, long numbers and special characters for correct display. Conversion runs locally in your browser, so your spreadsheet never leaves your device.
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