Check Danish spelling, grammar and punctuation free. Every issue underlined where it happens, with the reason attached.
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Danish grammar checker
Danish grammar checked with the reason attached
Paste Danish and every issue is underlined where it happens, labelled spelling, grammar, punctuation or style, with the reason attached. Danish is written in the Latin alphabet, and fælleskøn and intetkøn, -r on verbs, compounds are what a checker has to get right in it. This one shows the rule each time, not just the change, so you can accept the fix, ignore it, or learn from it.
How to check Danish grammar
Three steps. The third is the one most checkers leave out.
1
Paste or upload the Danish
Type, paste or drop in a document. Danish is already selected as the language on this page. If the text turns out to be something else, the detector says so and you can change it.
2
Read the flags
Every flag is underlined in the text and listed beside it. Spelling and grammar flags are errors; punctuation and style flags are judgements, and the label tells you which is which before you decide.
3
Accept, ignore or read why
Click a flag to see the fix and the rule behind it, then accept it or ignore it. Danish has rules that speech does not reveal, and the reason is there so the same error is not made twice.
What the checker looks at in Danish
The parts of Danish grammar and spelling where a checker has to know the language, not just the words.
AgreementNouns are common gender (en) or neuter (et), adjectives agree (en stor bil, et stort hus, den store bil), and the definite article is a suffix (bilen, huset) unless an adjective is present.
VerbsVerbs do not inflect for person, so the errors sit in the present-tense -r (han spiser) against the infinitive without it (at spise) after modal verbs and at, and in the verb-second rule: i dag kommer han, not i dag han kommer.
Spelling and diacriticsæ, ø and å are letters at the end of the alphabet; aa for å survives in some names and place names (Aarhus is accepted, Århus is also correct). The acute is used sparingly (én, idé, allé).
PunctuationDanish has two accepted comma systems, the traditional grammatical comma with a comma before every subordinate clause and the newer one without a starting comma; the checker follows whichever the text is using consistently. Decimals take a comma.
Capital lettersDays, months, languages and nationalities are lower case (mandag, januar, dansk). The formal De is capitalised; the everyday du is not.
Common mistakes in Danish writing
Five errors Danish readers notice at once, and what the checker does with each.
The missing present-tense -r
Jeg spiser, jeg vil spise. After a modal or at the verb has no -r; in the present tense it must. Because the r is not pronounced, this is the most frequent Danish spelling error.
nogen and nogle
Nogle means some (of a countable number); nogen means any, or somebody. Both are pronounced the same, so the rule has to be applied on paper.
Compounds split in two
Børnehave, ikke børne have; kundeservice, ikke kunde service. Splitting a compound changes the meaning or makes none.
sin against hans or hendes
Sin, sit, sine refer back to the subject of the clause (han tog sin jakke); hans and hendes refer to someone else. English speakers and Danish children make this error in the same direction.
ligge and lægge, sidde and sætte
Ligge is to lie, lægge to lay; sidde to sit, sætte to set. The pairs are as confused in Danish as in English, and the fix is a different verb.
Formal and informal Danish
Danish uses du nearly everywhere in writing today; De survives in formal letters to the very senior or in some customer-facing conventions. A text that switches between the two by accident reads as unsure.
The checker flags a mixed register as style rather than as an error, so the decision stays yours. If a whole text needs to move from one register to the other, the tone changer rewrites it in one pass.
Who checks Danish here
1
Pupils and students in Denmark, and Danish learners preparing for the PD3 test.
2
Businesses writing to Danish customers who read the missing -r as sloppiness.
3
Danes abroad and adult learners who want the grammar explained alongside the fix.
Danish grammar checker FAQs
Is the Danish grammar checker free?
Yes. Check Danish without an account, within the per-check and daily word allowances shown beside the editor. Signing in raises them, and Pro removes the guest limits and the ads. The pricing page lists what each plan includes.
Which Danish does it check?
Standard written Danish, spelled as the current standard has it. Compounds are one word (sundhedsplejerske), the r in the present tense is silent and therefore missing from careless writing (han køber, not han købe), and the pairs nogen/nogle, sin/hans, ligge/lægge, af/ad carry most of the everyday errors. Danish is preselected on this page; the language menu above the editor changes it if the text turns out to be something else.
Does it correct Danish spelling as well as grammar?
Yes, and in Danish the two overlap. Compounds are one word (sundhedsplejerske), the r in the present tense is silent and therefore missing from careless writing (han køber, not han købe), and the pairs nogen/nogle, sin/hans, ligge/lægge, af/ad carry most of the everyday errors. The Retskrivningsordbogen is the standard. Each of these is underlined where it happens, labelled spelling or grammar, with the standard form and the rule beside it.
Will it rewrite my Danish?
Not unless you ask it to. A check corrects what is wrong and leaves your sentences as you wrote them; every change is a separate flag you accept or ignore. The Improve and Rewrite passes, which do change wording, are separate buttons, and the paraphraser is a separate tool.
Can I check a whole Danish document?
Yes. Paste the text or drop in a .docx, .pdf or .txt file; the document is checked paragraph by paragraph and the corrected version can be copied or exported. Long documents are checked within the per-check allowance and continue as you scroll.
Is it useful if I am learning Danish?
That is where the reason attached to each flag earns its keep. Nouns are common gender (en) or neuter (et), adjectives agree (en stor bil, et stort hus, den store bil), and the definite article is a suffix (bilen, huset) unless an adjective is present. A learner sees which rule was broken, not just the corrected word, and can accept the fix or read why it was raised before deciding.
After the check
Translate the corrected Danish, change its tone, or shorten it. One plan covers every tool.
Each page opens the checker with that language already selected and explains what it looks for in it. The picker above the editor covers more than seventy languages in all.
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