Are my TSV files uploaded anywhere?

No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.

Is converting TSV to XLSX free?

Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.

Does converting TSV to XLSX lose quality?

No. XLSX stores the same content without discarding anything, so the result is identical in quality to the original.

Do I need to install anything to open XLSX files?

No installation is needed for the conversion itself — it runs in the browser you already have. Opening the XLSX afterwards needs whatever software normally handles Excel Workbook on your device.

TSVtoXLSX

Convert TSV to XLSX

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

You can convert TSV to XLSX free and without an account: drop the file above and the XLSX is ready to download in a second or two. The conversion happens inside your own browser, so the file is never uploaded — it works on Windows, Mac, Linux, iPhone and Android, and keeps working with the network switched off.

What TSV and XLSX are for

Like CSV but tab separated, which avoids the comma-inside-a-field problem entirely.

The Excel format since 2007. Several sheets, formulas, formatting.

How to convert TSV to XLSX

Drop your TSV file onto this page, or click to pick one.
Choose XLSX as the target. The conversion runs inside your browser — the file is never uploaded.
Download the finished XLSX file.

TSV vs XLSX: what changes

TSV compared with XLSX
	TSV	XLSX
Full name	Tab-Separated Values	Excel Workbook
File extension	.tsv, .tab	.xlsx
Media type	text/tab-separated-values	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Quality: Nothing is lost. The result holds exactly the same picture, text or data as the original.
Where it runs: This conversion runs inside your browser. Your file is never uploaded, and it works with the network disconnected.

TSV to XLSX: common questions

Are my TSV files uploaded anywhere?: No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.
Is converting TSV to XLSX free?: Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.
Does converting TSV to XLSX lose quality?: No. XLSX stores the same content without discarding anything, so the result is identical in quality to the original.
Do I need to install anything to open XLSX files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the XLSX afterwards needs whatever software normally handles Excel Workbook on your device.