CSV to Excel
Open messy CSV files as a properly typed .xlsx workbook.
Turn a raw CSV into a formatted Excel workbook with detected headers, real dates and numbers, frozen panes and auto-sized columns. Delimiter and encoding are sniffed automatically, so semicolon files from European systems just work.
- Price
- Free
- Your files
- Never uploaded
- Runs
- In your browser
or drag it here
.csv, .tsv, .txt · up to 50 MB · processed locally, never uploaded
Excel and spreadsheet files only. Export from Google Sheets as .xlsx or .csv.
Files stay on your device
What it does well
- Automatic delimiter sniffing for comma, semicolon, tab and pipe files
- Type inference that keeps ZIP codes and IDs as text, not numbers
- Frozen header row, auto-fit column widths and a table filter applied for you
How to use CSV to Excel
- 1
Upload one or more CSV files.
- 2
Confirm the detected delimiter and encoding in the preview.
- 3
Choose whether the first row is a header and whether to auto-type values.
- 4
Download the .xlsx workbook.
Watch a walkthrough
Common problems and fixes
Everything lands in column A.
The delimiter was mis-detected, usually because the header row uses a different separator than the body. Override it manually in the options panel.
Product codes like 00123 become 123.
Turn off auto-typing for that column in the preview grid, or enable “Treat all values as text”.
Frequently asked questions
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