Building Energy
& Thermal Calculators
16 released calculators for bounded conversion, normalization, and entered-value comparisons. Each route states what it calculates and what it cannot establish.
Energy Calculators
Choose the method matching your available evidence. Do not treat a conversion or entered-target comparison as a whole-building simulation, code check, or certification.
Keep calculations, codes, and certification schemes separate
An arithmetic conversion, energy-model output, adopted energy code, and voluntary certification assessment answer different questions. The applicable baseline and evidence depend on jurisdiction, scheme, edition, project type, and selected compliance path.
- Confirm the adopted energy code or named assessment scheme and its exact edition.
- Use compatible model boundaries, floor-area definitions, fuels, units, weather data, and time periods.
- Treat user-entered targets as inputs unless the method explicitly sources and selects them.
- Use the complete governing method and qualified assessor where compliance or certification is claimed.
They can use different scopes, boundaries, floor-area definitions, and model procedures. Compare only values produced on a compatible basis and retain the source of every input.
The reciprocal relationship applies within a compatible unit system. Assembly performance can also depend on layers, surface films, direction, repeating thermal bridges, framing, installation, and the governing calculation method.
Source and review basis
- ISO 52000-1 energy-performance framework
- ISO 52016-1 energy-needs procedures
- Passive House Institute building criteria
Hub claims reviewed .
Energy Guides
Technical references connected through canonical hub metadata.