Which Dutch diacritics does this remove?

It removes the trema (ë, ï, ö, ü), which Dutch uses to mark a syllable boundary, and the acute, grave, and circumflex accents found mainly on loanwords and the emphatic één. Each letter is mapped to its base form, so ë becomes e, ï becomes i, and é becomes e.

Does it keep uppercase and lowercase?

Yes. Case is preserved, so Ë becomes E and ë becomes e. Only the diacritic is stripped; the underlying letter and its case stay the same, and characters without accents are left untouched.

Can removing diacritics change meaning?

Sometimes. The emphatic één meaning one becomes een meaning a or an, and a trema that marked a syllable break is lost, so coördinatie becomes coordinatie. The tool flags how many characters changed so you can review before reusing the text.

What is a good use for this?

ASCII-only contexts: URL slugs, e-mail local parts, usernames, legacy file names, and systems that do not accept accented characters. It gives a clean transliteration without changing the letters themselves.

Is my text uploaded anywhere?

No. The conversion runs entirely in your browser using Unicode normalisation. Nothing is sent to a server, so it is safe for private text.

Dutch Diacritic Remover

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This tool strips diacritics from Dutch text, turning accented letters into their plain base letters. Dutch uses the trema to manage syllable boundaries and a few accents on loanwords, and there are many situations — slugs, file names, legacy systems — where you need a clean ASCII version.

How it works

The tool uses Unicode normalisation. It decomposes each character into its base letter plus a separate combining mark (NFD form), removes the combining marks, then recomposes the text. This reliably maps every accented Dutch letter to its base while leaving unaccented characters and case intact:

ë -> e    ï -> i    ü -> u    ö -> o
é -> e    è -> e    ó -> o    Ë -> E

Because it works on the combining-mark layer rather than a fixed lookup table, it also handles any accented character that appears in loanwords without needing a special case for each one.

Tips and notes

Removing diacritics can merge distinct words: the emphatic één (one) becomes een (a/an), and the syllable hint in coördinatie is lost when it becomes coordinatie. The tool reports how many characters it changed so you can decide whether the loss matters. For display text, prefer keeping the accents; reach for this tool when a downstream system genuinely requires ASCII, such as a URL slug or a username field.