How to Convert Excel to CSV Online
Add Your Data
Copy cells from Excel and paste into the input area (they arrive as tab-separated text). Or click Upload for a .xlsx/.csv file, drag and drop, or use URL Import.
Configure & Convert
Set the input delimiter if auto-detection doesn't match, toggle header row on or off, then click Convert to CSV to generate the output.
Choose Output Format
Select your preferred output delimiter (comma, tab, semicolon, or pipe). If you uploaded a .xlsx with multiple sheets, pick the sheet you need.
Copy or Download
Copy the converted CSV to your clipboard or download it as a .csv file. Review the preview table to verify the data looks correct.
Excel to CSV FAQ - Frequently Asked Questions
Is my data uploaded to a server?
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No. This tool runs 100% in your browser. Your spreadsheet data is never uploaded anywhere. All parsing and conversion happens entirely on your device.
What file formats can I convert?
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You can upload .xlsx (Excel) files, .csv files, .tsv files, and .txt files. You can also paste data directly from Excel, Google Sheets, or any spreadsheet app.
Can I convert Excel files with multiple sheets?
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Yes. When you upload a .xlsx file with multiple sheets, a dropdown appears letting you switch between them. Each sheet can be exported as its own CSV file.
What delimiters are supported?
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Input delimiters include comma, tab, semicolon, pipe, and colon - all auto-detected. Output delimiters include comma, tab, semicolon, and pipe.
Why do my dates appear as numbers?
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Excel stores dates as serial numbers internally. If dates appear as numbers in the output, re-save the Excel file with text-formatted date columns before converting.
Is there a file size limit?
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There is no hard file size limit. The practical limit depends on your browser's available memory. Most spreadsheets convert instantly.
What happens if I refresh the page?
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Your input, output, and all settings are automatically saved to your browser's local storage. Refreshing restores everything. Click Clear to remove stored data.
Can I convert CSV to a different delimiter format?
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Yes. Upload or paste a CSV file and select a different output delimiter (tab, semicolon, or pipe). This is useful for converting between regional CSV formats.
What Is an Excel to CSV Converter - And Why Use One Online?
An Excel to CSV converter transforms spreadsheet data into plain-text comma-separated values. You can paste tab-separated data copied from Excel, upload a .xlsx file, upload a .csv/.tsv text file, or import from a URL. CSV is the universal data exchange format - supported by databases, programming languages, spreadsheet apps, and data tools.
This free online converter runs 100% in your browser - your data is never uploaded to any server. It supports pasting from Excel, .xlsx file parsing with multi-sheet workbooks, multiple input delimiters with auto-detection, configurable output delimiters, header row toggle, data preview, copy to clipboard, and instant download.
Excel to CSV Converter Features
Paste from Excel
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Copy cells in any spreadsheet app and paste directly into the input area. The clipboard data arrives as tab-separated text, which the tool auto-detects and converts to your chosen output delimiter.
XLSX File Upload
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Upload a .xlsx file to parse it directly in your browser. The file is read and parsed locally without any server-side processing.
Multi-Sheet Support
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If your Excel workbook contains multiple sheets, a dropdown appears letting you switch between them. Each sheet is parsed independently and can be exported as its own CSV file.
Multiple Delimiters & Auto-Detection
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Supports comma, tab, semicolon, pipe, and colon as input delimiters. When set to Auto, the tool scans the first line and picks the most likely separator. Tab is automatically detected when pasting from Excel.
File Upload & Drag-and-Drop
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Upload .xlsx, .csv, .tsv, or .txt files using the Upload button, or drag and drop a file directly onto the input area. XLSX files are parsed as spreadsheets; text files are loaded into the textarea.
URL Import
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Click URL Import to fetch a CSV file from any remote address. The request goes directly from your browser to the target server - no intermediary.
Output Delimiter Selection
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Choose from comma, tab, semicolon, or pipe as the output delimiter. This is useful when your data contains commas (use tab or semicolon) or when importing into European tools that expect semicolons.
Data Preview
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After converting, the first 50 rows are displayed in a scrollable table so you can verify the data was parsed correctly before exporting. The first row is highlighted when header row is enabled.
Copy & Download
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Copy the entire converted CSV to your clipboard with one click, or download it as a .csv file. XLSX uploads use the sheet name as the filename.
Smart Quoting
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Cells containing the delimiter character, double quotes, or newlines are automatically wrapped in double quotes with proper escaping. This ensures the CSV output is always valid.
Auto-Save
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Your pasted input, generated output, and all settings are automatically saved to your browser's local storage. If you close the tab or refresh the page, your data will be restored.
Who Needs to Convert Excel to CSV?
Data Analysts
Convert Excel exports to CSV for importing into analysis tools, visualization platforms, and statistical software without format compatibility issues.
Web Developers
Extract spreadsheet data as CSV for seeding databases, building data-driven features, or processing in backend scripts.
Database Administrators
Convert Excel reports to CSV for bulk importing into databases. CSV is the standard format for bulk data loading operations.
Business Users
Convert Excel data from colleagues into CSV for tools, platforms, and services that don't support .xlsx natively.
Students
Transform survey data, lab results, or research datasets from Excel to CSV for homework, analysis projects, and thesis work.
Researchers
Convert experimental data and survey responses from Excel to CSV for statistical analysis and data processing workflows.
System Administrators
Convert user lists, configuration data, or audit logs from Excel to CSV for scripting, automation, and system imports.
Project Managers
Convert project schedules, resource lists, and budget spreadsheets to CSV for importing into project management and tracking tools.
Marketers
Convert contact lists, campaign data, and analytics exports from Excel to CSV for uploading to email platforms and ad managers.
Accountants
Convert financial reports, transaction logs, and ledger data from Excel to CSV for importing into accounting and invoicing software.
HR Professionals
Convert employee rosters, payroll data, and applicant lists from Excel to CSV for bulk uploading to HR management systems.
E-commerce Sellers
Convert product catalogs, inventory lists, and pricing sheets from Excel to CSV for bulk uploading to online store platforms.
Sales Teams
Convert lead lists, customer data, and pipeline reports from Excel to CSV for importing into CRM systems.
Teachers
Convert gradebooks, attendance records, and class rosters from Excel to CSV for uploading to learning management systems.
Data Engineers
Convert incoming Excel deliverables to CSV as part of data pipeline preprocessing before loading into data warehouses.
Freelancers
Convert client-provided spreadsheets to CSV when the receiving tool or platform requires plain-text data files.
Non-Profit Workers
Convert donor lists, volunteer records, and grant data from Excel to CSV for importing into donation and CRM platforms.
Real Estate Agents
Convert property listings, client contacts, and showing schedules from Excel to CSV for MLS and CRM imports.
Healthcare Administrators
Convert patient lists, appointment schedules, and billing data from Excel to CSV for importing into medical record systems.
Supply Chain Managers
Convert shipment logs, vendor lists, and inventory counts from Excel to CSV for warehouse and logistics system imports.
QA Testers
Convert test case spreadsheets and bug reports from Excel to CSV for importing into test management and issue tracking tools.
Journalists
Convert data obtained from public records, FOIA requests, and research sources from Excel to CSV for data analysis and visualization.
Small Business Owners
Convert customer lists, expense reports, and inventory spreadsheets to CSV for importing into bookkeeping and business tools.
Everyone
Convert any Excel spreadsheet to CSV on any device without installing software - just paste, upload, or drag and drop.
Supported Input Formats and Delimiters
| Format | Delimiter | Common Extensions | Auto-Detected |
|---|---|---|---|
| Excel paste | \t (tab) | clipboard | Yes |
| CSV | , (comma) | .csv | Yes |
| TSV | \t (tab) | .tsv, .txt | Yes |
| SSV | ; (semicolon) | .csv (EU) | Yes |
| PSV | | (pipe) | .psv, .txt | Yes |
| Colon-separated | : (colon) | .txt | Yes |
| XLSX | binary | .xlsx | Parsed |
Tips for Converting Excel to CSV
Paste directly from Excel
Select cells in Excel, press Ctrl+C, then paste into the input area. The data arrives as tab-separated values which are auto-detected and converted.
Use tab delimiter for data with commas
If your data contains commas (e.g., addresses, descriptions), switch the output delimiter to Tab to avoid quoting issues in downstream tools.
Check the right sheet
When uploading .xlsx files with multiple sheets, make sure you've selected the correct sheet before copying or downloading the CSV.
Verify the preview
Always check the preview table before exporting. Look for missing data, shifted columns, or unexpected values that might indicate a parsing issue.
Watch for date formatting
Excel stores dates as serial numbers internally. If dates appear as numbers in .xlsx output, re-save the Excel file with text-formatted date columns before converting.
Re-upload to refresh
If you modify the Excel file and want to re-convert, just click Upload or drop the file again. The tool resets and parses the new version.
Privacy & Security
This tool runs 100% in your browser. Your data is never uploaded to any server. All parsing and conversion happens locally on your device.
Your input and output are saved only in your browser's local storage so they persist when you refresh the page. You can clear them at any time using the Clear button. No cookies are used, no analytics track your data content, and no third-party services have access to what you convert.