TSV to Excel moves values, not the whole workbook
You have a tab-separated export and you want a workbook.
Rows are split on tabs and saved as XLSX. This is the right page when the file is TSV. A comma-separated file belongs on CSV to Excel.
Dates and extra sheets after TSV to Excel
Dates may be guessed. Leading zeros in IDs can disappear when Excel opens the sheet. Set those columns to text if they matter.
A related step, if you still need one, is Excel to TSV.
When TSV to Excel is the right page
TSV to Excel sits on this site because TSV and XLSX are not interchangeable, even when they look similar in a file list. You have a tab-separated export and you want a workbook. Scientific tools and databases prefer TSV when the data itself contains commas. Spreadsheets, charts, and CSV exports start here for most offices in 2026.
Rows are split on tabs and saved as XLSX. This is the right page when the file is TSV. A comma-separated file belongs on CSV to Excel.
What you give up by leaving TSV
TSV is a table with tabs between cells instead of commas. A tab inside a cell still breaks a column. Only the first sheet is exported from a workbook here.
Keep the original sheet. TSV is a flat copy.
What you gain, and do not gain, with XLSX
The download has to be XLSX, because that is the format the next step named. Spreadsheets, charts, and CSV exports start here for most offices in 2026. Values, dates, and several sheets can travel when the tool writes a real workbook.
Afterward, check dates, leading zeros, and whether a second sheet was left behind.
A test that matches the real file
Start from the question the other software asked. If it asked for XLSX, TSV to Excel is the matching page. If it asked for something else, switch tools instead of hoping a similar extension will pass. You have a tab-separated export and you want a workbook. Rows are split on tabs and saved as XLSX. This is the right page when the file is TSV. A comma-separated file belongs on CSV to Excel. The limit is the part people skip, and it is the part that decides whether the download is usable. Dates may be guessed. Leading zeros in IDs can disappear when Excel opens the sheet. Set those columns to text if they matter. The file stays in your browser and is not uploaded. The limit is 100 MB. Keep the original until the download has been opened in the program that will use it. Check three things in the download: it opens, the TSV material you cared about is still there, and the file size or the layout is what the form described. A new extension alone is not those three things. If a portal, a teacher, or a client rejects the file, send them the original TSV as well when you are allowed to. TSV to Excel is a convenience copy. It is not a new master. Spreadsheets break at quiet places: a second sheet, a date that changed, a leading zero that vanished, a comma inside a name. After TSV to Excel, open the result in a text editor as well as Excel. Excel guesses types and hides the delimiter. The workbook you calculated in is still the master.
Here is the decision for TSV to Excel. You start with TSV and you stop when a real program accepts XLSX. Tabs avoid the comma-splitting problem that hurts CSV. A conversion aimed at CSV or JSON flattens that richness. Charts and macros are not the point. If those two sentences describe a tradeoff you do not want, do not convert. Renaming the extension by hand will not do this job. Running the tool twice on its own output will not do it either.
Dates may be guessed. Leading zeros in IDs can disappear when Excel opens the sheet. Set those columns to text if they matter.
A related step, if you still need one, is Excel to TSV.
Other jobs start from the homepage, where each tool is named for the conversion it actually does.