Leading calculator manufacturer since 2011
So we became "calculator supplier" for juris - the legal information system for the Federal Republic of Germany
The emergence of Calconi
As the founder of Calconi and the German website Smart-Rechner.de, we have been active on the Internet since 1995. During this time, we have used online calculators from external providers in numerous projects. Often these were too complicated, not trustworthy and sometimes just plain ugly. We wanted to do this better. So in 2011 we founded Smart-Rechner and developed a framework for the creation of online calculators.
Now since 2020, with Calconi we also offer these useful calculators internationally. With a love for detail, we always seek the middle road between simple operation and technical correctness. Millions of users and satisfied customers are worth this effort. In 2018 we were commissioned by juris GmbH (Legal Information System for the Federal Republic of Germany) to provide all of the information required for the online calculators used there and to maintain their content in the future. Calconi - calculator manufacturer since 2011.
The founders - you can count on us
Stefan BanseHead of Development and Editor for Special Topics
Stefan Banse is a trained banker and studied computer science in Bonn. He was COO and member of the board for many years of Framfab Deutschland AG and has been dealing with all Internet-related topics since 1995. As key account manager for numerous major clients in the banking, insurance and healthcare sectors, he has the technical expertise to manage the Special Topics editorial department. Since 2011, he has been responsible for conception, development and quality assurance at Calconi Smart-Rechner.de.
E-mail to: email@example.com
Michael MühlHead of Marketing and Editor for Taxes
Michael Mühl also studied computer science in Bonn and in 1995 he founded Framfab Deutschland AG, one of the largest German Internet agencies. Through his role as a major project manager for banks and insurance companies, he also acquired expertise in the area of taxes. This culminated in 2006 with his leading role in the development of Germany's first and market-leading online tax consultant, the company steuerberaten.de GmbH. Michael Mühl has been head of the Marketing and Tax Editing department at Smart-Rechner.de since 2011.
E-mail to: firstname.lastname@example.org
The team workers - our editors
For each of the 12 Calconi calculators created thus far, we write various help and advice texts. Thus, we always offer added value and assistance, since the topics of the calculators are often somewhat dry and are hard to understand.
These texts are always being adapted to the current laws and regulations. When creating the texts, our diligent editorial team of experts in the fields of taxes, finance, medicine and law helps us. Suggestions welcome at email@example.com
Facts and figures
- On high-volume workdays, up to 100,000 people use our calculators.
- In the last 12 months, more than 25 million people have used our calculators.
- More than 100 websites and portals have integrated our calculators.
- We are "calculator supplier" for juris - the legal information system for the Federal Republic of Germany
- In cooperation with spiegel.de and bild.de, we regularly present selected calculators on current topics to a broad public.
That is why we always pay attention to quality in detail. Only when a calculator is easy to use for everyone are we satisfied.
Actuality is crucial
The topics of the calculators live from the topicality. Many legal bases change in the course of a year. We regularly check
all content and underlying details of the calculators. See the latest changes here:
August 1, 2021: Subject area Exchange rates
The pages of the "Exchange rates" category were last editorially reviewed by Stefan Banse on August 1, 2021. They all correspond to the current status.
Previous changes on October 25, 2020
- August 1, 2021: Daily update of exchange rates in the currency converter.
- Editorial revision of all texts in this category
May 10, 2021: Subject area Sizes of Shoe
The last changes in the "Sizes of Shoe" category were made by Stefan Banse on May 10, 2021. The main changes were:
May 5, 2021: Subject area Week of pregnancy
The last changes in the "Week of pregnancy" category were made by Stefan Banse on May 5, 2021. The main changes were:
May 4, 2021: Subject area Due Date
The last changes in the "Due Date" category were made by Stefan Banse on May 4, 2021. The main changes were:
How a Calconi calculator is created
We love good calculators, and our core business is calculators. It's not meant to sound like we have our heads in the clouds, but we have the motivation to always build the best calculators for every topic. That's why we put a lot of energy into development. We would like to briefly show you how a such a calculator is developed:
Our customer service for you
Do you have any questions about our calculators? Are the guides difficult to understand? Is there a calculator you'd like to see? You are welcome to contact
us with any questions you may have. We look forward to hearing from you. In exceptional cases, you can simply send us a compliment :-)
Your Calconi Team - Stefan Banse and Michael Mühl
Phone: +49 221 / 177 399 40 or e-mail to firstname.lastname@example.org