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Convert CSV to Excel Online
Turn a comma-separated CSV file into an XLSX workbook. Open the result in a spreadsheet editor to work with the imported rows and columns.
Active conversion station
CSV to XLSX
Convert CSV to Excel
How to convert CSV to XLSX
Prepare the source
Choose a comma-separated CSV file.
Review the settings
Check that its first row contains the intended column headings.
Check the result
Start Conversion, download the workbook and review the imported values.
Supported formats and limitations
Input: CSV. Output: XLSX. The importer uses automatic type detection and a comma delimiter. Leading zeros, dates and very long numbers need review.
Processing runs on the server after you select Start Conversion. The interface accepts files up to 500 MB; service and connection limits can be lower. No installation or account is required. Read our file processing privacy policy.
Why Use ConvertFast's CSV to XLSX?
- Import tabular CSV data into an Excel workbook.
- Convert multiple CSV sources into separate XLSX files.
Frequently Asked Questions
Can I choose a custom delimiter?
There is no delimiter selector in this workflow. Prepare a comma-separated CSV before uploading.
Will leading zeros remain unchanged?
Automatic type detection can interpret numeric-looking values as numbers. Check identifiers, postal codes and long numbers in the output.
Ready? It's Free.
No account required. Input rules appear before you upload.
Open CSV to XLSX Tool