Environmental Calculators
In development — coming soonEnvironmental calculators cover emissions, water, and acoustics — the quantities a project has to report, offset, or keep under a limit. This category is in development and no tools are published yet.
The planned tools keep the emission factor visible as an input rather than hiding it in a constant, because grid carbon intensity and fuel factors change by region and by year. Water and stormwater tools will state the design storm they assumed.
Until then, nothing on this page is a working tool. The lists below show what the category will hold and which published calculators already overlap with it, so a visit here does not end in a dead end.
What This Category Will Cover
Planned tools. None of these are live yet, so they are not links.
Closest Tools Available Today
Published calculators that already answer part of a environmental question.
Indoor Air Quality CO2 Calculator
Calculate steady-state indoor CO2 concentration using the mass balance model. Enter occupants, activity level, room volume, and outdoor airflow to check IAQ status, required ventilation rate, and cfm/person.
Calculate nowVOC Concentration Estimator
Estimate indoor VOC levels in ppm or mg/m³ from source emission rate, room volume, and ventilation dilution using a well-mixed steady-state mass-balance model.
Calculate nowNet Zero Energy Feasibility Calculator
Estimate annual net energy position in kWh/m²·yr or kBtu/ft²·yr by comparing annual building energy use against annual on-site renewable energy production. Screen SURPLUS, NEAR ZERO, DEFICIT, or LARGE DEFICIT outcomes for building-performance feasibility review.
Calculate nowCool Roof Energy Savings Calculator
Calculate energy savings from cool roof coatings and materials. Estimate reduced cooling load, annual kWh savings, and cost reduction based on solar reflectance and climate zone.
Calculate nowRadon Mitigation System Sizing Calculator
Estimate required CFM or m³/h for ASD fan sizing from treatment area, slab leakage class, and sub-slab communication condition. Preliminary radon mitigation airflow sizing for active soil depressurization system design.
Calculate nowCategories You Can Use Right Now
Need one of these sooner?
Requests move the order of work. Tell us which environmental calculation you run most often and what standard it has to follow, and it goes near the front of the queue for this category.