The building climate calculator (Gebäude-Klimarechner) is a free, practical tool that calculates the ecological value of existing buildings and compares various action strategies—from continued operation to replacement construction—based on CO₂ equivalents and resource footprints.

This fully responsive, web-based application calculator provides an easy-to-understand introduction to the complex sustainability assessment of buildings. It is initially available as a beta version for residential buildings. In addition to the online assessment, users can export the results as a printable PDF file.

A project developed by Muck Petzet Architects as part of ZukunftBau.

Identity, Web design, UX design, Motion design, Logo
Client: Muck Petzet Architects
Web development: Timo Rychert
Website: g-kr.online
Year: 2026