CSV ↔ XLSX Converter
Convert CSV files to Excel (XLSX) or Excel files to CSV online. Fast, free, and no software required.
What this tool does
Whether you need to open a CSV in Excel or export a spreadsheet for a system that only accepts CSV, Tabular converts between formats in seconds. Your data, column names, and structure are preserved exactly.
Problems it solves
- Opening CSV files in Excel without formatting issues
- Exporting Excel reports to CSV for database import
- Converting XLSX for APIs that require CSV
- Sharing data with users who only have Excel
- Converting large XLSX files efficiently
Example
CSV converted to properly formatted XLSX.
Before
| data.csv |
| Name,Email,City |
| Alice,alice@example.com,New York |
After
| data.xlsx |
| Name | Email | City |
| Alice | alice@example.com | New York |
Frequently asked questions
Is the conversion lossless?
Yes for text data. All text values, column names, and row order are preserved. Number and date formatting may differ between formats.
Is this free?
Yes. CSV/XLSX conversion is free for files up to 5 MB.
Will formulas in XLSX be preserved?
No. Only cell values are converted. Excel formulas are evaluated to their current value and stored as plain data in the output.
What about multiple sheets in an XLSX file?
Currently only the first sheet is processed. Multi-sheet support is on the roadmap.
Can I chain conversion with other operations?
Yes. Use the workflow builder to trim whitespace, remove duplicates, and convert format all in one job.
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