Nothing is uploaded
The spreadsheet is converted by your own device, inside the browser. Figures, prices and personal data never leave your computer.
All tools › Spreadsheet tools
CSV to Excel Converter
Convert CSV to Excel online and turn comma, semicolon or tab separated files into real XLSX or ODS workbooks. The separator is detected for you and numbers and dates become proper cells.
Drop files here or click to choose
CSV, TSV · up to 10 files · max 100 MB each
Key features
Up to 10 files at once
Drop a whole batch of spreadsheets, up to 100 MB each, and download the results one by one or together as a .zip.
Fast
Most workbooks are converted in a second or two; every file shows its own progress and result.
Every sheet kept
Multi-sheet workbooks are handled sheet by sheet, with names, numbers and dates preserved as they appear in the cells.
Simple options
CSV to Excel asks only for what matters, such as the separator or the output format, and uses sensible defaults for the rest.
Free, no account, no watermark
No sign-up, no limits, nothing added to your files. A single ad keeps the site running.
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