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Why convert CSV to XLSX?
Fast
Your file is converted in under 30 seconds in our cloud.
Secure
Files are automatically deleted after 1 hour.
Quality preserved
Maximum quality preserved during conversion.
About the CSV format
CSV — Comma-Separated Values
CSV is the universal format for tabular data — rows of values separated by commas (or other delimiters). It is the lingua franca of data interchange between databases, spreadsheets, and programming languages, supported everywhere from Excel to Python pandas to SQL databases.
Common uses
- Database import and export
- Spreadsheet data interchange
- Data analysis with pandas, R, or other tools
- Reporting and data pipeline transfers
About the XLSX format
XLSX — Microsoft Excel Open XML Spreadsheet
XLSX is the default format for Microsoft Excel spreadsheets. It supports complex formulas, pivot tables, charts, and large datasets, making it the standard for business data analysis and financial reporting.
Common uses
- Financial reports and budgets
- Data analysis and statistics
- Inventory and databases
- Business dashboards
Related conversions
Other conversions available for CSV and XLSX files
Frequently asked questions
Is the conversion free?
Yes, basic conversion is completely free. For large volumes, check out our paid plans.
What is the maximum file size?
Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.
How long are my files kept?
Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.
What formats are supported?
We support over 200 source and target formats. See our complete formats page.