Convert TSV to XLSX
Convert TSV to XLSX instantly in your browser. Free, fast, and private - your files are processed locally on your device.
Drop your TSV files here
Up to 5MB per file.
Files never leave your browser
How to Convert
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Upload your TSV files
Drag and drop or select TSV files from your device. You can upload multiple files at once.
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Configure Output
Start the conversion. Crest Convert will prepare the XLSX file using the appropriate format engine.
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Download XLSX files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert TSV to XLSX?
Convert TSV files to XLSX locally, with no file upload or account required.
Clear validation protects against duplicate headers, unsupported structures and oversized files instead of quietly discarding data. See the format notes below before importing the output into another application.
Frequently Asked Questions
Will product codes such as 00123 remain unchanged in Excel?
Yes. Every output cell is explicitly stored as text, so leading zeros, long identifiers and formula-like strings are not converted into numbers or executable formulas.
What happens to a TSV field longer than Excel permits?
Cells over Excel's 32,767-character text limit are rejected with guidance to choose JSON. They are not truncated to make the workbook appear successful.
How do I convert TSV to XLSX?
Select a file up to 5 MB, start the conversion, and download the result. Processing runs locally in your browser. Table conversions support up to 20,000 records, 256 columns and 200,000 cells.
Are my files uploaded?
No. This converter processes the file in a local browser worker. File contents are not sent to the conversion server, and the file is not used to train AI.
How are data types and spreadsheet safety handled?
Table text is kept as text, including leading zeros. XLSX output uses text cells rather than executable formulas. CSV/TSV fields beginning with formula-like characters receive a leading apostrophe for spreadsheet safety; choose XLSX or JSON if you need exact literal values. Nested table values use JSON text rather than ambiguous flattened field names.