Free · No signup · Browser-based

Convert TSV to Excel.

Drop a .tsv file or paste tab-separated data and download a real .xlsx workbook — typed cells, so Excel doesn't turn your numbers or dates into text. Generated in your browser.

01 · How it works

Three steps, then done.

Opening a TSV directly in Excel often mangles it — long numbers go scientific, leading zeros vanish, dates shift. This converter reads the tab-separated data and writes a real .xlsx workbook with proper cell types instead, so numbers stay numeric and dates stay dates. The workbook is generated entirely in your browser.

i. drop

Drop or paste

Drag a file, click to choose, or paste data directly into the input pane.

ii. detect

We read the shape

Types are inferred so the output is correctly formatted — not strings everywhere.

iii. use it

Copy, download, or dashboard

Copy the output, download it, or hit 'Build dashboard' to chart what's in the data.

02 · Why ours

Smart Excel conversion by default.

Free Excel converters often produce sloppy output — every value quoted, types lost, errors swallowed. Ours infers types where it can, fails loudly when it can't, and pairs the conversion with a one-click path to a dashboard.

  • 01

    Correct types

    Numbers, booleans and nulls are preserved wherever Excel supports them — not every value dumped as a quoted string.

  • 02

    Local-first

    Your file is parsed and converted in your browser — verify in DevTools → Network. Nothing is uploaded, logged, or stored.

  • 03

    Fails loudly

    Malformed input gives a clear, specific error instead of silently wrong output — so you can trust what comes back.

  • 04

    One click to a dashboard

    Every conversion keeps a tabular copy, so you can send the data straight to our visualization tool to chart it.

"Needed a conversion. Ended up with a dashboard. That's the pattern."
— the typical csvtodashboard arc
03 · FAQ

tsv to excel questions.

Why not just open the TSV in Excel?
Excel's text-import guesses types and frequently gets them wrong — dropping leading zeros, converting long IDs to scientific notation, reinterpreting dates by locale. Writing a real .xlsx with explicit types avoids all of that.
Any tab-delimited text with a header row — database exports, 'Save as Tab-delimited' files, and similar. The header becomes the column titles.
Yes — a genuine .xlsx workbook with typed cells, not a TSV renamed. It opens natively in Excel, Numbers, Google Sheets and LibreOffice.
No. The .xlsx is built entirely in your browser with a self-hosted engine; your data never leaves your device.