CSV to Excel
Turn CSV files into Excel workbooks on your device.
🔒 Everything runs in your browser. Nothing you choose or type is uploaded. How to verify
How to use it
- Choose one or more CSV files.
- Select Run.
- Download the XLSX files.
Handy for
Sending cleaned-up data as a proper workbook.
Good to know
The workbook has one sheet called Sheet1. Dates stay as text, because CSV does not say which text is a date.
Privacy: where the work happens
Everything you enter or choose is processed by JavaScript in your browser and never sent anywhere. Only the page code, and any library this tool needs, is downloaded from cdnjs or jsDelivr.
Questions
Are numbers kept as numbers?
Plain numbers become numeric cells. Values with leading zeros, such as 007, stay as text.
Which separators work?
Commas, semicolons, tabs and pipes are detected from the first line.