Upload a comma-separated CSV and download an Excel .xlsx workbook. First 10,000 rows only.
Drop your CSV here
or
Maximum 10 MB. Converted on the server and deleted immediately.
What This Tool Does
CSV to XLSX: Reads a comma-separated file and writes an Excel workbook.
First 10,000 rows: Larger files are rejected so memory stays bounded.
Server-side: The file is uploaded, converted, and discarded.
How to Convert CSV to Excel
- Select a
.csvfile. - Wait while the workbook is built.
- Download the
.xlsxfile and open it in Excel or Google Sheets.
Limits
- Comma-separated input with quoted fields.
- Up to 10,000 rows and 10 MB.
- No formulas are invented from the CSV values.
- Requests are limited to ten per minute from the same address.
Privacy and Processing
The CSV is uploaded to produce the workbook, then discarded. Do not upload spreadsheets you are not permitted to share.
Further reading
Open a CSV in Excel Without Fighting the Import Wizard.
CSV to Excel Converter FAQ
How many rows can I convert?
Up to 10,000 data rows. Larger files are rejected so the conversion stays within memory limits.
What delimiter is used?
A comma. Quoted fields are supported. Tab-separated files are not auto-detected on this page.
Will formulas be created?
No. Values are stored as they appear in the CSV. Dates and numbers may be treated as text depending on the cell content.
What is the file size limit?
10 MB. Requests are limited to ten per minute from the same address.
Is my file stored?
It is uploaded to build the workbook, then discarded. We do not keep a library of spreadsheets.
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