# Welcome This is a space for helping you use and understand Building Transparency's suite of tools, including:


	EC3	Embodied Carbon in Construction Calculator	Upfront Carbon Assessment* Free to use \| Open access
	tallyLCA	tally Life Cycle Assessment (the original tally)	Whole Life Impact Assessment* Revit plugin \| Trial + License

Due to the ever-changing nature of the tools, this User Guide is continually a work in progress.

*Differences in Scope Explained

**Upfront vs. Whole Life** Upfront assessments only account for life cycle stages that can be measured upfront. Whole Life assessments also account for future use-stage and end-of-life aspects anticipated based on current trends.

**Carbon vs. Multiple Impacts** Carbon assessments consist of tracking only the following impact category: * Global warming potential (GWP) measured in kgCO2e Complete Life Cycle Assessment usually also considers other impact categories, such as, but not limited to, the following: * Acidification potential (AP) * Eutrophication potential (EP) * Ozone depletion potential (ODP) * Smog potential (SP) Life Cycle Assessments also usually report non-impact categories, such as depletion of resources and generation of waste.

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