German commas made easy!

Do you find it difficult to decide where the commas go in an German sentence? Get help with Kommatroll!

This program will add missing commas in your German texts and offer advice on superfluous ones as well. At the same time, the program identifies and corrects misspelled words. Kommatroll classifies comma errors into over 50 different categories, and can therefore provide targeted explanations and examples for each suggestion. In addition, explanations are also available for most existing, correct commas. All comments are available in both German and English. For more information on comma types and errors, please see our German comma manual. In the case of spelling errors, Kommatroll suggests the most likely correction.

A colour scheme is used to distinguish between obligatory and optional commas, and you can choose if you want to see the optional suggestions. Furthermore, each error type can be turned on or off individually, for instance for stylistic or pedagogical reasons.

  • Wenn man vermeiden will,
    Correct subclause comma
     dass Bären ins Zelt kommen 
    Missing subclause end comma
    oder wenn es Ameisen gibt 
    Missing subclause end comma
     kann man das Essen in einen Baum hängen.
  • Eine Schnellfähre zu kaufen 
    Optional infinitive end comma
     würde dem Inselturismus
    Inseltourismus
     helfen,
    Superfluous coordination comma
    und es Kindern ermöglichen 
    Obligatory infinitive comma
     eine Schule auf dem Festland zu besuchen 
    Missing subclause comma
    ohne,
    Wrong subclause comma
     dass gleich eine Bürcke
    Brücke
     gebaut werden müsste.

Kommatroll runs online in your browser, Microsoft Word, or Google Docs, on a variety of different platforms. All kinds of texts are handled, and you can copy-paste existing text into the program window without losing formatting information.

You get a high-quality tool based on many years of university-level research and development. Correction suggestions are very reliable and build on a deep grammatical analysis of your sentences.

Single-user subscriptions1 start at DKK 32,- (EUR 4.50) per month. For an institutional or company license, or for a free trial period, please contact us. There is free access for employees and students at SDU (University of Southern Denmark).

Subscription type 6 months2 12 months2 Combinations5
Commercial use (single-user license) 900 DKK
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720 excl. VAT 		1500 DKK
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Private use4 (personal & family license3) 450 DKK
75/month,
360 excl. VAT 		750 DKK
63/month,
600 excl. VAT 		Select
Student (single-user license)4 225 DKK
38/month,
180 excl. VAT 		375 DKK
32/month,
300 excl. VAT 		Select
Subscription type Variable/Combinations5
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  1. Single-user licenses are strictly personal and may not be shared with anyone. Violations will lead to account termination.
  2. Note that this is a recurring subscription, managed and paid via PayPal.
  3. Family license may be shared within a household. Max 5 devices may be logged in to an account at any one time.
  4. Private use is for internal documents, learning, and other uses where the final result is not used in a professional/commercial context. If you use the tool at work, for publication, company mail, etc., this will fall under commercial use.
  5. Simultaneous subscriptions to more of our services (RetMig, Kommaforslag, Commatizer, Kommatroll) earn a discount, as does multi-user subscriptions.


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