Free, methodology-transparent carbon & GHG emissions calculators — Scope 1, 2 & 3, embodied carbon, and financed emissions, built on auditable DEFRA, IPCC & grid emission factors.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Online


One Click LCA is described as 'The fastest LCA & LCC software on the market rated with 100% quality by BRE, allowing users to automate life cycle impacts and cost from their existing design data (BIM, Excel, gbXML) with just a push of a button' and is an app. There are 2 alternatives to One Click LCA for Web-based, Windows, iPad, Linux and Mac. The best One Click LCA alternative is GreenCalculus, which is both free and Open Source.
Free, methodology-transparent carbon & GHG emissions calculators — Scope 1, 2 & 3, embodied carbon, and financed emissions, built on auditable DEFRA, IPCC & grid emission factors.


eTool is a streamlined Life Cycle Assessment for buildings and infrastructure. It estimates the costs, carbon emissions, water use, toxicity, land use, acidification and ozone depletion relating to all aspects of the building including materials, construction, energy inputs...
