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Answer a few quick questions and we'll calculate your annual carbon and environmental footprint. It's easy, informative, and the quiz only takes minutes.

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Carbon Footprint - A Definition & Why Measurement Matters

Defining "Carbon Footprint"

Carbon footprint is the amount of greenhouse gases and specifically carbon dioxide (CO2) generated or emitted by activity (like travel, transportation, or using energy) during a given time period. Carbon footprint is the most common measurement category when talking about environmental footprint or climate change, and is typically measured in pounds, kilograms, or tons (often abbreviated MT for metric tons) of CO2. Growth of atmospheric CO2 from burning fossil fuels is the single largest scientifically recognized contributor to climate change, global warming, and biodiversity loss.

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Our industry-leading, enterprise social impact and environmental sustainability management software helps hundreds of companies, non-profits, and mission-driven organizations make their climate and social impact work more efficient, effective, and data-driven.

Our carbon footprint calculators use 100% peer-reviewed academic data from trusted third-party sources, including CO2 calculation estimates and inputs from the International Organization for Standardization (ISO), the United Nations, the Center for Climate and Energy Solutions, and researchers at Stanford University, Yale FES, UC Berkeley, the University of Michigan, Tufts University, North Carolina State University, and the University of Seville. If you find any methodology issues or inconsistencies, have suggestions on more accurate or updated sources, or have any other questions or environmental measurement needs, please contact us. We're not affiliated with ISO, CCES, LEED, Energy Star, the UN, or the EPA.

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