Embodied Carbon in Construction Calculator

Sign In to the EC3 tool.

The Embodied Carbon in Construction Calculator (EC3) tool, is a free and easy to use tool that allows benchmarking, assessment and reductions in embodied carbon, focused on the upfront supply chain emissions of construction materials. Now hosted and managed by Building Transparency, a new 501c3 organization, the EC3 tool was incubated at the Carbon Leadership Forum with input from nearly 50 industry partners. The tool utilizes building material quantities from construction estimates and/or BIM models and a robust database of digital, third-party verified Environmental Product Declarations (EPDs). Powered by this data, the EC3 tool can be implemented in both the design and procurement phases of a construction project to look at a project’s overall embodied carbon emissions, enabling the specification and procurement of the low carbon options.

The EC3 tool also allows owners, green building certification programs and policymakers to assess supply chain data in order to create EPD requirements, and set embodied carbon limits and reductions, at the construction material and project scale.

The tool and its subsequent effect on the industry is driving demand for low-carbon solutions and incentivizing construction materials manufacturers and suppliers to invest in disclosure, transparency and material innovations that reduce the carbon emissions of their products.

*We are actively looking for additional partners and funders to continue the administration and further development of the EC3 tool. Please email us at partnerships@buildingtransparency.org if you are interested in joining our community of supporters.*

Register Free

EC3 Main functions

Find & Compare Materials

Simple sorting and visualization of supply chain specific EPD data, with the ability to see material category baselines and set material category targets.

More details

Plan & Compare Buildings

Simple visualization of a project's potential and realized embodied carbon emissions, with the ability to see conservative baselines and set achievable reduction targets.

More details

Declare Your Products

Digital EPD platform and EPD automation. View specific EPD data per product in a standardized digital format.

More details

Verify & Audit

Audit and verify digital EPDs, if you are a Program Operators/LCA Practitioners responsible for third-party verified EPDs.

More details

EC3 Partners

Lead Sponsors

Pilot Sponsors

Association Sponsors

Material Sponsors

Early Adopter

SCS Global Services

PCS Structural

Technology & Data



LMN Architects

Urban Fabrick
WAP Sustainability

Central Concrete
National Ready-Mix

Central Concrete

Project Leadership