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Convert XLS to CSV
Convert XLS to CSV format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
XLS
Microsoft Excel 97-2003Legacy Excel binary format. Limited to 65,536 rows and 256 columns, replaced by XLSX.
Best for
Legacy spreadsheet compatibilityOlder systems
Advantages
- + Legacy compatibility
- + Simple format
Limitations
- − Row/column limits
- − Outdated
- − No modern features
Target
CSV
Comma-Separated ValuesTabular data format with comma-separated values. Universal format for data exchange between applications.
Best for
Data exchangeDatabase export/importSpreadsheet dataBulk data
Advantages
- + Universal support
- + Simple format
- + Human readable
- + Tiny file size
Limitations
- − No formatting
- − No data types
- − Delimiter conflicts