TSV ⇔ CSV Converter
Switch between TSV and CSV formats with one click. Auto-detects encoding for seamless conversion.
Drag & drop TSV files
or
Supported formats: CSV / TSV / TXT files supported
What Is TSV to CSV Conversion?
TSV to CSV conversion is an online tool that converts between tab-separated (TSV) and comma-separated (CSV) text data. It's useful for converting tab-separated data copied from Excel or spreadsheets to CSV, or changing CSV data to tab-separated format for text editor editing.
sakutto.ai's TSV/CSV converter processes everything in your browser — your data is never sent to any server. Safely convert files containing business data and personal information.
Automatic character encoding detection means you can simply drop a file and convert instantly. Great for reformatting database exports, exchanging data between different systems, and preparing text for processing. Free, no sign-up required.
How to Use the TSV ⇔ CSV Converter
- Select the conversion direction (TSV → CSV or CSV → TSV)
- Drag and drop a file, or use the file picker to upload it
- Choose the output character encoding if needed
- Click the "Convert" button
- Download the converted file
Features
- Two-way conversion
- Supports both TSV → CSV and CSV → TSV — switch directions with one click
- Auto-detect delimiter
- Automatically detects whether the uploaded file uses commas or tabs
- Character encoding options
- Choose from UTF-8 (with or without BOM) or Shift_JIS for the output file
- Smart quoting for CSV
- Cells containing commas or line breaks are automatically wrapped in double quotes during CSV conversion
- Batch conversion
- Convert multiple files at once
- 100% browser-based
- Your files are never sent to any server — your data stays private
TSV vs. CSV — What's the Difference?
| Comparison | CSV | TSV |
|---|---|---|
| Delimiter | Comma (,) | Tab (\t) |
| File extension | .csv | .tsv |
| Common uses | Excel, database imports, web-based tools | Google Sheets, text editors |
| Key characteristic | Most widely used format. Data containing commas must be quoted | Tabs rarely appear in data, so quoting is seldom needed |
Why TSV ⇔ CSV Converter on sakutto is safe
Many online tools upload your files to external servers for processing. This tool never sends your text files to any server — everything is processed entirely in your browser.
* Some AI-powered tools require server-side processing. Tools that send data to a server will always notify you beforehand.
| Comparison | Typical online tools | sakutto |
|---|---|---|
| Where data is sent | Uploaded to external servers | Nowhere — processed in your browser |
| Data leak risk | Risk during transfer and server storage | No risk — no network transfer occurs |
| External traffic | File data travels over the internet | No file data appears in network logs |
| Offline use | Not possible (server required) | Works offline after initial load |
How browser-based processing works
- WebAssembly (WASM): Processes text files in your browser at near-native speed. No server communication occurs.
- Web Workers: Runs on a background thread separate from the main thread, so your browser stays responsive during processing.
- After processing, your browser automatically frees the data from memory. No text files remains outside your device.
For IT security teams: How to verify
You can verify that sakutto never sends your text files externally by checking the Network tab in your browser's DevTools while using the tool. You'll see that no requests involving your text files are made. This can also serve as documentation for your IT security team.
Frequently Asked Questions
What is a TSV file?
TSV (Tab-Separated Values) is a text file format that uses tab characters to separate data fields. Unlike CSV, which uses commas, TSV avoids quoting issues when data itself contains commas.
Will the conversion cause encoding issues?
No. The tool auto-detects the input file's encoding and lets you choose the output encoding. For opening in Excel, we recommend UTF-8 with BOM or Shift_JIS.
Does it work with files exported from Google Sheets?
Yes. CSV and TSV files downloaded from Google Sheets can be loaded and converted directly.
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