CSV Formatter & Aligner
Align CSV columns, or convert to a table or JSON.
📊CSV Formatter & Aligner
All processing happens locallyWhat this tool does
CSV Formatter & Aligner is a CSV parser that aligns columns and converts formats, implements the standard table both ways and locates invalid bytes instead of silently dropping them.
Parsing follows RFC 4180: inside double quotes, commas and newlines belong to the field, and a doubled quote means a literal quote. Aligned output pads by display width, counting CJK characters as two columns so it lines up in monospace fonts.
How to use it
- Paste or type your content into the input field at the top, or press the sample button to load demo data.
- Adjust the options below the input, such as output format, separators, letter case or precision.
- Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
- When the result looks right, use the copy button in the corner, or download it as a local file.
Tips and notes
Clean up stray spaces and line breaks before pasting for more accurate results.
FAQ
Yes. Column widths use display width, counting one CJK character as two columns, so mixed Chinese and English aligns in monospace fonts.
Wrap the whole field in double quotes, such as "Beijing, Shanghai". Commas and newlines inside the quotes belong to the value.
Thousands of rows are fine, but very wide aligned tables are hard to read — switch to Markdown or JSON, and split huge files first.
The bytes are invalid in the chosen encoding — usually the wrong codec.
Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.
No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.
Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.
Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.