Project basics
RIBA stage
3–4
Design dev.
Design dev.
5
Construction
Construction
6
As-built
As-built
Stage affects how confident to treat this figure, not the calculation itself.
Building basics
Material quantities
m³
kgCO2e/m³
tonnes
kgCO2e/tonne
m³
kgCO2e/m³
m²
kgCO2e/m²
m²
kgCO2e/m²
Factors are typical A1–A3 defaults, editable. For a bid or formal report, replace these with product EPDs or a One Click LCA run.
Where this lands
0
tCO2e A1–A5 · 0 kgCO2e/m²
Business as usual—
Improving practice (indicative)—
2030 target (RIBA / LETI)—
Your estimate—
Benchmarks are shown as total tCO2e for your floor area, so you can see the scale of the carbon budget before design has started. Sources: RIBA 2030 Climate Challenge v2, LETI Embodied Carbon Primer, cross-checked directly against both publications.
Want a figure you can actually build to?
This is an indicative planning tool, not a compliant Life Cycle Assessment. A formal embodied carbon assessment is modelled against your real drawings and bill of quantities in One Click LCA.
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