EN ISO 6946 · EN ISO 13370
U-value calculator
Calculate the thermal transmittance (U-value) of walls, floors, roofs and constructions adjacent to the ground. The calculator follows EN ISO 6946 and EN ISO 13370 calculation methods.
Building physics calculators
Free online tools for thermal calculations of building elements. Select the calculator you would like to use.
EN ISO 6946
Surface resistance calculator
Calculate the external and internal surface thermal resistance of wall, slab, roof and floor structures in accordance with EN ISO 6946.
More calculators:
this page is designed so that additional building physics calculators
can be added easily in the future.