Embodied carbon · Sustainability-minded builders
Estimate the embodied carbon of a build from the concrete, cement, steel, timber, brick, glass and aluminium you use—using ICE database factors that apply anywhere in the world.
Enter the main materials for your build.
Factors use the ICE (Inventory of Carbon & Energy) database and apply anywhere in the world. Cradle-to-gate (A1–A3) only — transport, construction, use and end-of-life are not included.
Your estimate
The upfront embodied carbon locked into your building materials.
42,840 kg, cradle-to-gate
44% of the total
Average petrol car (~0.19 kg/km)
A mature tree ≈ 21 kg CO₂/yr
Indicative ICE-based factors for awareness, not a verified life-cycle assessment or compliance report. Recycled content, mix design and local production change these numbers significantly.
Breakdown by material
Includes cement, sand and aggregate in the mix. · 312 kg CO₂e per m³
World-average steel; high-recycled/EAF rebar can be ~30% lower. · 1990 kg CO₂e per tonnes
Standard fired clay brick ~3 kg each. · 0.72 kg CO₂e per bricks
Primary aluminium is far higher (~13); recycled far lower. · 9.2 kg CO₂e per kg
Cradle-to-gate only; biogenic carbon stored in the timber is not deducted here. · 160 kg CO₂e per m³
Float glass; double glazing roughly doubles this. · 14 kg CO₂e per m²
Practical guide
Read the related guide for assumptions, ordering tips and ways to compare the estimate with actual site records.
Same-category tools first so each intent stays clustered—then open the full hub if you need a different job.
Frequently asked questions
Yes. The Construction Carbon works in your browser without an account. You can install GharNaksa when you want to track the real project costs, payments and progress.
No. It is a planning estimate based on the information you enter. Verify rates, quantities, drawings, local requirements and contract terms with the appropriate qualified professional before making a commitment.
Use GharNaksa to record actual material deliveries, labor, payments, bills and site photos. Comparing the estimate with a dated site record helps reveal cost differences early.