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Tabs to Spaces Converter

Convert indentation between tabs and spaces without disturbing alignment inside lines.

Converting indentation between tabs and spaces should only touch the leading whitespace on each line. Tabs or spaces used inside a line to align comments, table columns or string contents must be left alone or the alignment breaks — which is why this converter defaults to leading-only.

Runs in your browser
Privacy
Runs entirely in your browser — nothing is uploaded
Cost
Free, unlimited, no sign-up

Frequently asked questions

Does the tabs-versus-spaces choice matter?

Only that a project picks one. Mixed indentation genuinely breaks Python and makes every diff noisy in other languages. Record the decision in .editorconfig and the argument stops being one.

How to use the tabs to spaces converter

  1. 1Enter or paste your code.
  2. 2Choose the convert.
  3. 3Set the tab width.
  4. 4Turn "Only convert leading indentation" on or off as needed.
  5. 5The result appears immediately — copy or download it.

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Put the working tabs to spaces converter on your own site. It runs in your visitors' browsers exactly as it does here — free, no account, nothing uploaded.

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