Data
Turn your TSV files into XLSX in seconds. Everything happens in your browser: nothing is uploaded to any server.
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Like CSV: a single sheet and no formatting. As XLSX you open it in Excel with its columns and sheets.
TSV is like CSV but separates columns with tabs, so commas inside the text are not a problem.
Strengths: It pastes straight into a spreadsheet and is common for scientific data.
Limits: Like CSV: a single sheet and no formatting.
XLSX is the Microsoft Excel format: a workbook with one or more sheets, data types and formatting.
Strengths: It is what almost any office expects.
Limits: Other apps and databases usually ask for CSV to import data.
No. The TSV to XLSX conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
Up to 1 GB on desktop and about 200 MB on mobile, although a huge spreadsheet may take a few seconds.
Yes. Drop as many TSV files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each XLSX or all of them in a ZIP.