Convert TSV to Excel Online
Convert TSV files to Excel format directly in your browser. No upload required — your data never leaves your device.
About this conversion
This tool converts TSV files to Excel format directly in your browser — no account required, no file upload, no waiting for a server. It processes your data entirely within your browser using WebAssembly, so nothing ever leaves your device.
The tool preserves all columns and data types from your source file and writes a valid Excel file ready to download. Large files are handled efficiently using a vectorised columnar engine.
Frequently Asked Questions
What is Excel format?
Excel (XLSX) is Microsoft's spreadsheet format, widely used in business. It supports multiple sheets, formulas, and formatting.
Is my TSV data private?
Yes — completely. Your file is never uploaded to any server. All conversion happens inside your browser using WebAssembly — locally, with no upload. Once you close the tab, nothing is retained.
What is the maximum file size?
The free limit is 50 MB. For larger files, performance depends on your device's available memory — most modern machines can handle 500 MB to 1 GB comfortably.
What is the difference between TSV and Excel?
Both TSV and Excel are common data formats used in engineering and analytics workflows.
Related Tools
Add Cumulative Sum to Excel Files Online
Add a running total column to Excel files for any numeric column. Optionally order by a date or sequence column and restart totals per group — no upload required.
Detect Outliers in Excel Files Online
Detect statistical outliers in Excel files directly in your browser. Flag or remove rows where numeric values exceed a chosen number of standard deviations from the mean — no upload required.
Validate Email Addresses in Excel Files Online
Validate email addresses in Excel files directly in your browser. Add a boolean column flagging valid and invalid emails, or filter to show only invalid rows — no upload required.
Add Moving Average to Excel Files Online
Add a moving average, rolling sum, rolling min, or rolling max column to Excel files directly in your browser. Choose window size, order-by column, and optional partitioning — no upload required.
Search Text in Excel Files Online
Search for text across all string columns in Excel files directly in your browser. Filter rows to only those containing your search term and download the results — no upload required.