Need help? Reach us at 
+1 (855) 418-2323
Need help? Reach us at
+1 (855) 418-2323
File Converters TIFF and PDF apps Forensic Freeware1) Upload XLSX file to convert
Drop files here, or Click to select
Allowed file types: edi, qif, ofx, iif, srt, ics, excel, ris, bib, ods, xls, xlsx, xlsm, csv, tsv, tab, xlsb, xltx, xlr, pxl, qpw, wb3, wq1, dbf, wk3, 123, mdb, evtx, pages, numbers, sqlite
2) Set converting XLSX to CSV options
3) Get converted file
Total Excel Converter
Total Excel Converter supports almost all Excel extensions: XLS, XLSX, XLSM, XLSB, XLT, XLTM, XLTX, XLK, XLW. When the new Office is released, we will add new file types too.With Total Excel Converter you can convert Excel to PDF and add a digital signature in one go.Total Excel Converter can convert each page of your spreadsheet into a separate file.Tell Total Excel Converter to copy original time stamps if you don't want to change the date.Have an outdated Microsoft Office 2003? Update all your old files to the new format in one go. Convert XLS files to XLSX in batches.Total Excel Converter will help you to convert Excel 2003 XML Files (rare option!)Total Excel Converter has a built-in renamer to give your files new descriptive names. Include a counter, a date or worksheet name into the file name and your files will be in perfect order.Convert Excel spread sheets via our most straightforward interface.The widest list of output file types: DOC, PDF, HTML, MHT, XHTML, CSV, TXT, TIFF, JPEG, SVG, RTF, XML, XLS, XLSX, ODS, ODT, Lotus, DIFF, SYLK, LATEX, SQL, DBF, Access!Total Excel Converter can combine several Excel spread sheets into one TIFF or PDF file.Want to quickly find a file? Total Excel Converter helps you to preview any document you select.Add your logo or any other image to the header or the footer of the output file.Want more order? Add page counters or a date to every page of the output files. Sequential numbering of several folders is avaialble.Total Excel Converter can copy original time stamps if you want to keep them.When you convert Excel to PDF you can set user permissions, password-protect your files or sign with a digital signature. Get PDF, PDF/A and non-searchable PDFs.Total Excel Converter can be run via command line (get the ready-to-use command line from GUI).💾 Upload Your File: Go to the site, click on «Upload File,» and select your XLSX file.
✍️ Set Conversion Options: Choose CSV as the output format and adjust any additional options if needed.
Convert and Download: Click 👉«Download Converted File»👈 to get your CSV file.
An XLSX workbook can contain several worksheets, but a CSV file holds a single table. The online converter writes every visible worksheet into the same CSV file, one after another, and skips hidden worksheets. Each worksheet keeps its own header row, so a second header line appears where the next worksheet starts.
Before importing the CSV into another system, check which worksheets were exported, then review the column headers, the delimiter and the character encoding. The file is comma-separated UTF-8 without a byte order mark, and values are saved the way Excel displays them: a cell formatted as currency becomes $1,234.50 and a percentage becomes 25.6%.
Example. On 7 October 2026 we converted a workbook with two worksheets, First and Second, saved with Second as the active sheet. Both worksheets are in the CSV:
Code,Name,Qty FIRST-101,"Alpha, large",5 FIRST-102,Beta,12.5 Code,Name,Qty SECOND-202,Gamma,7 SECOND-203,"Delta ""quoted""",3
The first three lines come from First and the last three from Second. If you need only one worksheet, keep just that sheet in a copy of the workbook before you upload it. For several workbooks, or to choose which worksheets are converted, see Total Excel Converter.
| File extension | .XLSX, .EXCEL |
| Category | Document File |
| Description | XLSX is a format from Office Open XML family, a native MS Excel file type starting from version 2007. As opposite to XLS, this format uses ZIP compression that makes XLSX files smaller in size. Actually XLSX file is an archive of XML-documents. The cells in XLSX table can contain plain text, formulas or graphic elements. XLSX can be read in MS Office 2007 and later, Universal Viewer, OpenOffice, MS Office Excel Viewer, Corel WordPerfect Office. This format doesn’t support macros. |
| Associated programs | Microsoft Excel 2007 OpenOffice OxygenOffice Progessional (Linux) |
| Developed by | Microsoft |
| MIME type | |
| Useful links | More detailed information on XLSX files |
| Conversion type | XLSX to CSV |
| File extension | .CSV |
| Category | Document File |
| Description | CSV is a plain text format used for representing database tables. Each data box (cell) is enclosed in commas. Each line is a table row with data cells. It is a perfect format for transporting tables from one application to another. CSV files can be edited in OpenOffice Calc, MS Excel and many others. Being a plain text in actual fact, CSV tables are compatible with various text editing programs. It doesn't support formatting, so any data structuring is made with the use of special characters. |
| Associated programs | The CSV file format is very simple and supported by almost all spreadsheets and database management systems |
| Developed by | Microsoft |
| MIME type | text/csv |
| Useful links | More detailed information on CSV files |
Quick answer: To convert XLSX to CSV, upload your Excel .xlsx workbook to our free online converter, which reads every visible worksheet, resolves formulas to their results, and writes each row as comma-separated values (quoted per RFC 4180, preserved as UTF-8), then download a clean CSV ready for databases or pandas. Free, no installation.
An XLSX file is an Excel workbook with formulas, formatting, and multiple sheets — but databases, pandas, CRMs, and ETL pipelines want plain CSV. This converter strips the spreadsheet down to its data: each row becomes a line of comma-separated values, formulas resolved to results, text preserved as UTF-8. The CSV imports into any system that reads structured data. No Excel, no install — free, instant, files up to 50 MB. Upload your .xlsx file and download the CSV in seconds.
Excel XLSX is rich — formulas, formatting, charts, multiple sheets — but it's also a barrier. Databases want CSV. Python pandas wants CSV. Mailchimp wants CSV. Salesforce imports CSV. Every analytics tool, every ETL pipeline, every data migration accepts CSV first and Excel second. Converting XLSX to CSV strips your spreadsheet down to the data alone — rows and columns, no formatting, no formulas, just values separated by commas — ready for any system that processes structured data. Drop your .xlsx file above and download a clean CSV in seconds.
The converter parses the XLSX file (which is internally a ZIP archive of XML sheets per the OOXML standard), reads every visible worksheet, evaluates formulas to their resulting values, and writes each row as a line of comma-separated values. Quote characters are added around fields containing commas, line breaks, or quote characters, per RFC 4180. Multi-byte text (Cyrillic, Arabic, CJK, accented Latin) is preserved as UTF-8 in the output.
Each row in the spreadsheet becomes one line in the CSV. Values are written as Excel displays them: a date keeps the format of its cell (2026-10-07 or 07/10/2026), a currency cell becomes $1,234.50, a percentage becomes 25.6%, and booleans become TRUE/FALSE. Empty cells produce empty fields between consecutive commas. For a workbook with several sheets, the converter writes every visible sheet into the same CSV, one after another, and skips hidden sheets.
| Property | Excel XLSX | CSV |
|---|---|---|
| File structure | ZIP archive of XML | Plain text |
| Formulas | Yes — live recalc | No — values only |
| Multiple sheets | Yes | No — one table per file |
| Cell formatting | Yes (fonts, colours, borders) | None |
| Charts and images | Yes | No |
| Database import | Requires Excel ODBC driver | Native — every database |
| Python / R import | openpyxl, pandas, readxl | Standard library |
| File size | Larger (compressed XML) | Minimal (just text) |
pandas.read_csv(). XLSX requires the openpyxl dependency and is slower for large datasets. CSV is the standard input format for data analysis pipelines.| Feature | Online (this page) | Total Excel Converter |
|---|---|---|
| File size limit | 50 MB | No limit |
| Batch conversion | One file at a time | Entire folders |
| Software required | No | Windows install |
| Sheet selection | All visible sheets in one file | You choose the sheets to convert |
| Delimiter control | Comma | Comma, semicolon, tab, pipe, custom |
| Encoding control | UTF-8 | UTF-8, UTF-16, ANSI, ISO-8859 |
| Automation / CLI | No | Yes |
| Price | Free | From $49.90 |
The desktop Total Excel Converter processes entire folders of XLSX files to CSV automatically:
TotalExcelConverter.exe C:\Reports\*.xlsx /csv /out C:\CSV_Output\
Add /delim ";" for semicolon-separated output (standard in European locales), /encoding utf8 to force UTF-8 with BOM, or /sheet "Data" to target a specific worksheet. Useful for nightly data export pipelines, normalising client-supplied Excel files before database load, or batch-processing report exports for analytics tools.
| Feature | Online Converters | CoolUtils Desktop | Excel Built-in | Other Software |
|---|---|---|---|---|
| Batch Conversion | Limited | ✅ Unlimited | Manual only | Limited |
| File Size Limit | 1-5MB | ✅ No limits | System dependent | Varies |
| Privacy & Security | Upload required | ✅ 100% offline | ✅ Local only | Varies |
| Conversion Speed | Internet dependent | ✅ Fast local processing | Slow | Medium |
| Advanced Options | Basic | ✅ Full customization | Limited | Basic |
| Cost | Free/Premium | One-time purchase | Requires Office | Subscription |
| Formatting Preservation | Good | ✅ Excellent | Good | Varies |
| Multiple Formats Support | Limited | ✅ 40+ formats | Few formats | Limited |
Page updated
