Excel to CSV Converter
Convert XLSX, XLS, XLSM, or ODS spreadsheets to CSV — pick a sheet, choose a delimiter, download one or all. Nothing is uploaded.
Drop a spreadsheet here
XLSX, XLS, XLSM, or ODS — or click to browse
Max file size: 25MB · processed in your browser
100% Private: Your spreadsheet is parsed entirely in your browser — nothing is uploaded to any server.
Extract structured tabular data from complex spreadsheet workbooks into clean, universally compatible comma-separated values (CSV) files directly in your web browser. While Excel workbooks (.xlsx, .xls, .xlsm, .ods) store rich cell formatting, pivot caches, and graphical charts, data ingestion pipelines, SQL databases, and statistical software require lightweight plain text.
Our client-side conversion engine parses workbook sheets locally in memory, evaluates formula outputs, serializes rows according to RFC 4180 standards, and provides immediate single-sheet downloads or full multi-sheet ZIP bundles without transmitting sensitive financial records to cloud servers.
How it works
1. Upload your spreadsheet file
Drop your .xlsx, .xls, .xlsm, or .ods spreadsheet into the upload box or click to select a file up to 25 MB from your device.
2. Select your active sheet and delimiter
Navigate between detected worksheet tabs to preview data rows, and choose your preferred separator: comma, semicolon, tab, or pipe.
3. Export your CSV data
Click “Download CSV” to retrieve the selected sheet, copy text directly to your clipboard, or select “Download All (ZIP)” to save every sheet as an individual CSV.
When you'd use it
Importing tabular figures into SQL databases
Database administrators convert client spreadsheet dumps into comma-separated text files optimized for bulk COPY and LOAD DATA INFILE operations.
Feeding clean inputs to data science and machine learning models
Data engineers extract raw numerical arrays from multi-tab workbooks into TSV or CSV files for analysis in Python pandas, R scripts, or Jupyter notebooks.
Migrating contacts and inventories to CRM platforms
Marketing teams convert customer address books and catalog sheets into standard CSVs matching import schemas for Salesforce, HubSpot, or Shopify.
Exporting localized figures for European software systems
Accounting specialists switch delimiters to semicolons so numeric values containing decimal commas parse accurately without column misalignments.
Delimiter versatility and RFC 4180 compliance
A common pitfall during spreadsheet export is data corruption caused by unescaped characters: if a customer note or product title contains a comma, naive splitters break that single value across two columns. Our engine strictly implements RFC 4180 quoting specifications.
Any cell containing separator tokens, quotation marks, or multi-line line breaks is safely wrapped in double quotes, with internal quotes escaped cleanly. Furthermore, you can select semicolon delimiters for European locales, tab delimiters to create TSV files, or pipe delimiters for Unix pipeline scripts.
UTF-8 byte order mark (BOM) protection for international characters
Opening standard UTF-8 text files in desktop Microsoft Excel on Windows often results in broken characters (mojibake) because Excel defaults to legacy ANSI encoding unless explicitly signaled. Our downloader automatically prepends a UTF-8 Byte Order Mark (BOM) to generated file streams.
This ensures that accented European names, currency symbols, and non-Latin text open cleanly across every version of Excel while keeping clipboard copies clean and BOM-free for programming environments.
Multi-sheet workbook processing and zero network transmission
Many online converters only process the first tab in an Excel workbook, requiring tedious manual re-saving for secondary sheets. TryDocsy exposes every sheet through an intuitive tab switcher, letting you inspect individual tables or export every worksheet concurrently into a zipped archive.
Crucially, the entire parsing and CSV generation routine takes place entirely on your device. Proprietary business ledgers, private customer databases, and employee salary sheets never travel across external networks.
Frequently asked questions
Can I convert all sheets in a multi-sheet Excel file at once?
Yes. When a workbook contains multiple tabs, click the 'Download All (ZIP)' button to export every worksheet as an individual, clearly labeled CSV file in a single ZIP package.
Which spreadsheet file formats are accepted?
The converter accepts modern Excel OpenXML (.xlsx), legacy binary Excel (.xls), macro-enabled workbooks (.xlsm), and OpenDocument spreadsheets (.ods) up to 25 MB in size.
How does the converter handle spreadsheet formulas?
Formulas (such as SUM or VLOOKUP) are evaluated based on their last computed values and exported as plain text results rather than raw formula expressions.
Why do downloaded CSV files include a UTF-8 BOM?
The Byte Order Mark instructs Microsoft Excel to render non-English letters, accented characters, and symbols properly without displaying garbled text.
Can I choose semicolon or tab instead of a comma?
Yes. Use the delimiter dropdown to select comma, semicolon, tab (for TSV output), or pipe separators to match your target software's ingestion format.
Are my confidential spreadsheet records uploaded to any server?
No. All workbook parsing and text encoding execute entirely inside your web browser's local sandbox. Your data remains strictly private on your computer.