Know your formats
Supported formats and limitations
- Input formats
- TSV
- Output formats
- XLSX
- All fields become text cells, including numbers, dates, and strings that look like formulas.
- Malformed quotes are rejected. Limits are 25,000 rows, 256 columns, and 250,000 input cells.
Quoted TSV records become a single Data worksheet. Embedded tabs and line breaks stay within their cells. Every value is stored as text, preserving leading zeros and formula-like strings without evaluation. The workbook also retains literal apostrophes already present in the source.
Maximum input size is 2 MiB per file.
A local workflow
How to use this converter
Your file contents stay in the browser as you work.
Select the TSV file.
Convert its tab-delimited records into the Data worksheet.
Download the XLSX workbook.
A little more clarity
Frequently asked questions
How should I write a tab inside a field?
Enclose the entire field in double quotes. A literal double quote inside that field is written twice.
Is TSV to XLSX available now?
This tool runs locally with JavaScript enabled. Check its supported formats and size limits before converting.