Tabs to Spaces Converter
Convert tabs to spaces or spaces to tabs, with a width you choose.
Settling the indentation question
Code can be indented with tabs or with spaces, and mixing the two in one file causes misaligned, inconsistent formatting that looks fine in one editor and broken in another. This converts a file wholesale from one to the other at the width you set, so a file with mixed or wrong indentation becomes uniform.
Paste your code and convert its indentation either way.
Which to use, and why it matters
The tabs-versus-spaces debate is famously heated, but the practical points are simple. Tabs let each reader set their own indent width and use one character per level; spaces guarantee the code looks identical everywhere regardless of editor settings. What genuinely matters is consistency within a project and a codebase, because mixed indentation is what actually breaks alignment and, in whitespace-sensitive languages, can break the code outright. Convert to whichever your project standardises on and keep it uniform.
Questions & answers
Should I use tabs or spaces?
Either works — what matters is consistency within a project. Mixing them is what causes misaligned, broken-looking code.
Can I choose the tab width?
Yes — set how many spaces each tab becomes when converting, or the reverse.
Is my code uploaded?
No. The conversion happens in your browser.