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jumk.de

Free online calculators and reference tools for German-speaking internet users, run as a network of content websites

Germanyjumk.deWebsite technologies

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Highlights

  • New on EvolcAdded 2026-11-01

About jumk.de

Jumk.de Webprojekte operates a network of websites that offer free content and online tools. Its main site, Rechneronline.de, provides online calculators. Other sites cover topics such as astronomy, time and date tools, health, travel, games, and text and network utilities. Some projects are published as open source or under Creative Commons licences.

The sites are aimed at general internet users. The pages carry advertising, marked with the label "Anzeige".

The network is published in German, with additional English and Italian sites. The homepage also lists two partner websites.

Product: Free online calculators, reference pages, games and web utilities published across a network of content websites.

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Website technologies

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Website detection does not establish a paid subscription or company-wide use. Tools loaded after consent or sign-in may be missed. “No longer observed” does not prove the company stopped using a tool.