File tools
Convert CSV to Excel
Turn CSV data into a clean Excel workbook while preserving rows, columns, and the original file.
No account needed for Free conversion.
Up to 20 MB · UTF-8 CSV → one XLSX workbook · 100,000 rows / 256 columns / 1 million cells
Start with one CSV
Rows, columns, leading zeros and text stay intact. No account needed for Free conversion.
Your data stays intact
Quoted commas, line breaks, Unicode and empty cells are preserved. Values are written as text without automatic number or formula inference.
Private files, connected history
Files are processed in an isolated worker with bounded resources. Signed-in users keep source and workbook together in Files. Share links require an eligible plan and your explicit action.
Common questions
What does CSV to Excel do?
It creates one XLSX workbook with one worksheet from your CSV rows and columns. Each source value is stored as text.
Does it change my original CSV?
No. The workbook is a new file linked to your source. Signed-in users keep both in Files under their retention policy; guest downloads remain available for 24 hours.
Are leading zeros preserved?
Yes. IDs, account numbers, postal codes and phone numbers remain text, so 001234 stays 001234.
What delimiters are supported?
Auto detection, comma, semicolon, tab and pipe. If detection is ambiguous, choose the separator explicitly. UTF-8 and UTF-8 with BOM are supported.
Are formulas executed?
No. Formula-like CSV values are written as literal text. No macros, external links or embedded objects are created.
Can I use the converted XLSX in Excel?
Yes. The output is a standard Excel-compatible workbook. From Files you can download, rename, delete or share it where your plan allows, or convert it to PDF.