Convert CSV to XLSX
Convert CSV files to XLSX spreadsheets securely offline. Our app maintains perfect data formatting with complete privacy. No cloud uploads.
Drag 'n' drop files here, or click to select files
See why it's better offline
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All files are converted in the browser and do not leave your device. Use the app for offline conversions.
Supported Conversions
3,742 total conversions across all formats
Direct conversions transform files in one step.
Multi-stage conversions use intermediate formats for complex transformations.
Same format conversions allow you to alter compression, quality, or other settings.
Audio Formats
435 conversions available
Video Formats
914 conversions available
Image Formats
892 conversions available
Document Formats
1501 conversions available
Why Convert CSV to XLSX?
About CSV Format
CSV is a simple text-based format for data that lacks formatting options, multiple sheets, formulas, and other advanced spreadsheet features.
Benefits of XLSX Format
XLSX is Microsoft Excel's modern spreadsheet format that supports rich formatting, multiple worksheets, formulas, charts, and other advanced features for better data organization and analysis.
When you normally Google "csv to xlsx" ↓
Lost privacy with tools that send your files to unknown servers
Frustration when a file format isn't supported
Confusion dealing with complicated command-line tools
Risk of exposing sensitive files during conversions
Overwhelm from managing multiple tools for different file types
= Too many headaches with traditional file converters
🤕
There's an easier way
Great app! Finally something local to convert from anything into anything else, instead of every time going to google "convert x into y online".
Sergiy Horef (Mizyigres)
Convert Files Locally on Your Computer
Tired of uploading files to sketchy online converters? Fed up with command line tools?
- ✓3,093+ conversions for video, audio, image & documents
- ✓100% private - files never leave your computer
- ✓1,077+ users converting files offline
How to ConvertDesktop app for Mac, Windows & Linux
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