Spreadsheets

The CSV format

A table written as text: one line per record, values separated by commas (or semicolons, as Excel expects in countries that use the decimal comma). It’s the universal format for importing and exporting data.

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Fact sheet

CSV

Comma-Separated Values

Best for: Importing contacts, price lists and orders into business software, online shops and databases.
Limits: No formatting or formulas; decimal commas need care.
Type: plain-text table
Multiple sheets: no
Separator: comma or semicolon
Extensions: .csv
MIME type: text/csv

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Questions about the CSV format

How do I open a CSV file?

Usually a double click is enough: operating systems and the most common programs recognise it. If the program or website you use won’t accept it, you can convert it here to a more common format, for example XLSX.

What extension do CSV files have?

.csv. The MIME type is text/csv.

Does converting a CSV lose quality?

The content is preserved; layout and style details may change between different formats.