Engineer Low-Carbon Projects From the
Ground Up
eTool is the whole life carbon software built for design engineers shaping tomorrow’s infrastructure and buildings.
Built to Meet the Standards That Matter
Our software aligns with all major International Standards and Rating Schemes, including
PAS 2080, EN 15978, ISO 14040, and ISO 14044.
Why design engineers choose us

Data you can trust
eTool is backed by globally recognised standards (EN 15978, ISO 14040/44, RICS, GHG Protocol), so your results hold up in peer review, boardrooms, and certification audits.
Detailed LCA, simplified
Access powerful lifecycle assessment tools without wasting time. Compare options, run scenarios, and identify hotspots with clarity—no PhD required.
Built for real engineering workflows
Import BIM models, use product libraries, and drill down into materials, assemblies, or systems. Optimise your design without the spreadsheet slog.
Works across all disciplines
Whether you’re in structural, civil, or building services engineering, eTool helps you see the carbon impact of your discipline—and coordinate with the full design team.
How eTool fits your workflow
Import from Revit or IFC
Use existing BIM models to speed up setup
Access a verified materials library
Target, measure and optimise
What you can do with eTool
Quantify carbon from day one
Estimate carbon fast using templates and benchmarks
Run scenario modelling
Estimate carbon fast using templates and benchmarks
Meet client and policy targets
Estimate carbon fast using templates and benchmarks
Collaborate with clarity
Estimate carbon fast using templates and benchmarks
Instantly generate reports
Estimate carbon fast using templates and benchmarks

Trusted across sectors
Major infrastructure (transport, utilities, public assets)
Commercial and residential buildings
Education and healthcare facilities
Urban development and precinct-scale projects
Bridges, hospital and more
Cerclos is paving the way for the next era in sustainable development with their innovative eTool software.

Hannah Morton
Senior Sustainability Consultant
Cundall








