Convert CSV to XLSX online for free
1: Choose multiple local CSV files or enter the URL of an online CSV file. 2: Choose "XLSX" as target format and set options. 3: Click the "START CONVERSION" button to convert CSV files to XLSX online.
Set conversion options (optional)
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File extension: .csv
In computing, a comma-separated values (CSV) file stores tabular data (numbers and text) in plain text. Each line of the file is a data record. Each record consists of one or more fields, separated by commas. The use of the comma as a field separator is the source of the name for this file format.
File extension: .xlsx, .xlsm
The Office Open XML file formats are a set of file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets and presentations as well as specific formats for material such as mathematical formulae, graphics, bibliographies etc.