Local converter

Convert CSV to Excel XLSX.

Create an Excel workbook without an account or upload. Check columns, clean data and download a new copy.

How to convert

Open the tool, select your CSV or TSV, check delimiter and encoding, then choose Excel .xlsx in the export panel.

Preserve identifiers

Values remain text, so postcodes, codes such as 00123 and long identifiers keep their zeros and precision.

Formula safety

Formula protection is enabled by default for values beginning with =, +, - or @.