What CSV delimiters are supported?
Comma (,), semicolon (;), tab and pipe (|). The most likely one is picked for you.
How does auto-detection work?
The tool reads the first lines of your file and picks the delimiter that splits them into the same number of columns. Delimiters inside quoted fields don't count, and a sep= line at the top of the file is followed. If it guesses wrong, choose one yourself.
Are data types preserved during conversion?
Yes. Numbers stay numbers and text stays text. Values that only look like numbers stay text, so no digit is lost: IDs and postcodes with leading zeros, phone numbers, and references longer than 15 digits. Dates written as 2026-03-04 become real Excel dates. A date like 04/03/2026 could be 4 March or 3 April, so it stays text unless you set the date order. In a semicolon file, decimal commas such as 1234,50 are read as numbers.
Can I handle CSV files with quoted fields?
Yes. Quoted fields, escaped quotes and fields that contain the delimiter are handled following the standard CSV rules.
What happens to special characters?
They come through as they are. The tool reads UTF-8 and UTF-16 files, and older Windows files (Windows-1252) too. Accents, symbols and other Unicode text are kept in the Excel file.
Is there a limit on the number of rows or columns?
Files can be up to 50 MB. Excel's own limits apply too: 1,048,576 rows and 16,384 columns.
