Convert TSV to XLSX
Free, fast TSV → XLSX. No watermarks, no sign-up.
How to convert TSV to XLSX
1. Upload TSV
Drop your TSV file into the converter above.
2. Confirm XLSX
Output is already set to XLSX. Adjust only if you need to.
3. Download
Convert and download your XLSX file instantly.
Format Details
TSV
TSV (Tab-Separated Values) is a plain-text tabular data format that uses tab characters as column delimiters and newlines to separate rows, making it similar to CSV but avoiding issues when data values contain commas. It is well-supported by spreadsheet applications, relational databases, and scripting languages, and is commonly used for data exports from bioinformatics databases, genome browsers, and text-processing pipelines.
dataXLSX
XLSX is the default spreadsheet format for Microsoft Excel since Office 2007, built on the Open XML standard and standardized by ISO. It stores worksheets, formulas, charts, pivot tables, and formatting in a compressed ZIP archive of XML files, making it more compact and corruption-resistant than the older XLS format. XLSX is supported by Google Sheets, LibreOffice Calc, Apple Numbers, and virtually every modern data tool.
dataConverting TSV to XLSX: what actually changes
TSV to XLSX is one of the conversions this site performs, but the two formats are not interchangeable containers. Here is what the file keeps, what it loses, and how to get a result you can use.
What .TSV and .XLSX each hold
.TSV is a data format built for analysing, importing or exchanging records, storing rows, columns and value types. .XLSX is a data format built for analysing, importing or exchanging records, storing rows, columns and value types. Converting between them is a decision about which of those two jobs the result needs to do.
What changes in the conversion
Both files belong to the data category, so this is a like-for-like repackage: the same kind of content, stored in a different container. What changes is how .XLSX encodes rows, columns and value types — not what the file is about.
When this conversion is the right one
Reach for .XLSX when the software, device or platform you are sending to expects it — the content is the same data, only the packaging differs. The reverse direction works the same way, so you can always convert back from .XLSX to .TSV using the same tool.
Tips for a clean TSV to XLSX conversion
Start from the original file
Convert the .TSV you started with, not an earlier .XLSX output. Every extra round trip costs quality and can accumulate formatting drift.
Check the real type, not the extension
Text/tab-separated-values becomes application/vnd.openxmlformats-officedocument.spreadsheetml.sheet. If a file was renamed rather than converted, it will fail to open — rename it back to its true extension before uploading and the conversion will recognise it.
Confirm the structure first
Open the .TSV briefly and check delimiters, headers and encoding. A misplaced separator or a stray quote is the usual reason the output looks wrong even though the conversion succeeded.
Limits worth knowing
Uploads are capped per file (30 MB, or 100 MB for video) and processed temporarily — nothing is kept as a permanent copy. For huge data files, split or compress the source first.
Frequently Asked Questions
How do I convert TSV to XLSX?
Upload your TSV file on Convertek, select XLSX as the output format, then click Convert. Your XLSX file will be ready to download instantly.
Is the TSV to XLSX converter free?
Yes. Converting TSV to XLSX on Convertek is completely free with no watermarks. Fair upload limits apply (typically 30 MB per file).
Is my file kept after conversion?
No. Files are processed temporarily and not stored permanently. Converted downloads are available only in your browser session.
What is the difference between TSV and XLSX?
TSV and XLSX are different file formats with distinct use cases. Converting between them lets you use your file in software or workflows that require the XLSX format.