Convert CSV to XLS
Converting from: CSV
Converting to: XLS
Upload your files
Drop your files here
or
Any size · Multiple files at once
About CSV
CSV (Comma-Separated Values) stores tabular data as plain text, with each line representing a row and commas separating columns.
The universal format for importing and exporting data between databases, spreadsheets, and analytics tools.
CSV has no official standard until RFC 4180 was published in 2005, decades after the format was already widely used.
💡 Despite the name, CSV files can technically use semicolons, tabs, or other delimiters instead of commas.
About XLS
XLS is the older binary spreadsheet format used by Excel versions before 2007.
Still needed when working with legacy systems or older software that doesn't support XLSX.
XLS files are limited to 65,536 rows and 256 columns — a fraction of the modern XLSX capacity.
💡 The XLS binary format dates back to 1987, making it older than the World Wide Web itself.
Frequently asked questions
How do I convert CSV to XLS?
Upload your CSV file above, and Other Streets converts it to XLS instantly in your browser — no software to install and no waiting.
Is converting CSV to XLS free?
Yes. Every conversion on Other Streets, including CSV to XLS, is completely free with no limits or hidden fees.
Can I convert multiple CSV files to XLS at once?
Yes. You can upload as many CSV files as you want and convert them all to XLS in the same batch.