Green Building
Planning calculators for green building — estimates from industry-style inputs.
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LEED Points Calculator
Estimate your LEED v4.1 certification level from credit category point projections across all seven scoring categories.
Passive House Calculator
Evaluate whether your building meets Passivhaus (PHI) certification criteria for heating demand, cooling demand, primary energy, and airtightness.
Net Zero Building Calculator
Analyze whether your building can achieve net-zero energy status by comparing annual consumption against on-site renewable generation.
Embodied Carbon Calculator
Calculate A1-A3 embodied carbon (kgCO2e) for your building's structural and envelope materials — concrete, steel, timber, masonry, glass, and insulation.
Daylighting Factor Calculator
Calculate the Average Daylight Factor for a room based on window area, glass transmittance, room geometry, and surface reflectance.
Living Roof Calculator
Calculate green roof structural loading, stormwater retention capacity, thermal performance, and cost for extensive or intensive systems.
Thermal Bridging Calculator
Calculate the effective R-value reduction and heat loss penalty caused by thermal bridges in your building envelope.
Life Cycle Assessment Calculator
Estimate whole-building life-cycle carbon emissions (kgCO2e) across product, construction, use, and end-of-life stages per ISO 14040.
Indoor Air Quality Score Calculator
Calculate a composite IAQ score (0-100) based on ASHRAE 62.1 ventilation, MERV filtration, CO2, VOC levels, and humidity.
Water Efficiency Calculator
Calculate indoor water use savings from efficient fixtures compared to EPA baseline for LEED WEc2 credit analysis.