Contact us
Have a question, suggestion, or need help? We're happy to assist.
Why KalkulatorPro?
40+ calculators
A comprehensive set of calculation tools for the installation industry – heating, ventilation, plumbing, gas, and electrical.
800+ daily users
Trusted by thousands of designers, engineers, and installers in the HVAC industry across Poland.
Available everywhere
Use the calculators on your computer, tablet, or phone – in the office and on the construction site.
Constantly evolving
We regularly add new calculators and features. The tool is developed in collaboration with industry specialists.
What our users say
In our office, we've been using KalkulatorPro for several years almost daily. There's always something to calculate in every project. Often during a site visit, we can quickly calculate something to give the client an initial answer. Highly recommended!
Wodbud Instal
An invaluable tool for an engineer's work. Quick calculations of ventilation ducts or pipes have helped me many times on the construction site. I recommend it to everyone in the industry.
Whenever I want to use pipes with the right diameter, whether for heating installation or ventilation duct, I use KalkulatorPro. What diameter should the pipe be from the boiler or heat pump to the manifolds? I find the answer here.
Swan-KlimTry KalkulatorPro
Sign up and start using professional installation calculators. Have questions? Contact us!