Convert CSV to Excel (XLSX/XLS) — free, in your browser

Free online CSV to Excel (XLSX/XLS) converter — no sign up, no upload. Convert in your browser at no cost. Per-file limit is 50 MB; PDF jobs are capped at 50 pages per conversion.

Drop files to convert

How it works

Convert CSV files to Excel (XLSX/XLS) for sharing, editing, or publishing. Excel (XLSX/XLS) is widely supported and works well for everyday workflows.

Drop your CSV file above to open the converter, review the preview, and download the converted result.

Why use a browser converter

Ask Jeeves runs entirely in your browser — your files are never uploaded to a server. Processing stays on your device, so you keep control of your data.

Limits

Ask Jeeves is free with unlimited conversions — no sign up and no daily cap. Per-file limit is 50 MB; PDF jobs are capped at 50 pages per conversion.