Embodied Carbon in Concrete Calculator
Cradle-to-gate (A1-A3) carbon for a concrete element, and what replacing cement with GGBS or fly ash actually saves.
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Sustainability & Compliance
Embodied carbon, recycled content, waste diversion and stormwater — the figures green rating schemes and public tenders ask for.
Carbon and compliance calculations are only as good as their emission factors, and this is the category where a plausible-looking number does the most damage. Factors here are editable inputs with typical published ranges offered for orientation, never fixed constants — the spread between two suppliers of nominally identical concrete routinely exceeds thirty percent, which is larger than most of the savings people go looking for.
Each page also states its assessment boundary, because most disagreements about a carbon figure turn out to be disagreements about scope. Cradle-to-gate excludes transport, construction, use and end of life; location-based and market-based electricity accounting give different answers for the same building. Neither is wrong, and reporting one while describing the other is.
LEED Recycled Content Value Calculator
Compute recycled content as a share of total materials cost, using the post-consumer plus half pre-consumer convention.
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Operational Carbon from Electricity Calculator
Convert annual electricity use into emissions at your grid's intensity, and see how a decarbonising grid changes it.
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Sediment Basin Sizing Calculator
Size a construction sediment basin from the disturbed area draining to it, on the standard storage-per-area rule.
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From this site
One project, every trade
Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.
Open My Project →Structural Material Carbon Comparison Calculator
Compare the cradle-to-gate carbon of two structural options on the same job, per unit of mass.
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