Understand your lifestyle carbon footprint in minutes. Get personalized actions from your AI companion. Runs entirely in your browser with zero tracking.
No login requiredNo personal data sent to serversFully keyboard and screen-reader accessible
Core Features
Calculate
Answer a few lifestyle questions regarding home energy, transport, and diet to calculate your educational score.
Understand
Instantly discover which aspect of your day-to-day life constitutes your biggest footprint contributor.
Reduce
Commit to personalized actions, track progress locally, and simulate improvements using What-If parameters.
The Climate Challenge & Our Purpose
Human activities release billions of tons of greenhouse gases into the atmosphere every year, trapping heat and driving global climate change. While systemic industry changes are crucial, individual choices collectively shape demand.
Carbon Companion AI was created to demystify individual environmental impact. Our mission is to provide an accessible, educational tool that helps you trace where your daily habits intersect with carbon emissions. By doing this locally—with zero trackers and zero data transmission—we put control back in your hands.
What is a Carbon Footprint?
Understanding the science, metrics, and math behind emissions accounting.
Carbon Footprint
A carbon footprint represents the total volume of greenhouse gases (GHGs)—such as carbon dioxide, methane, and nitrous oxide—emitted directly or indirectly by an individual, household, event, or product. It is traditionally quantified in weight (kilograms or metric tons) of carbon dioxide equivalents.
CO₂e (Carbon Dioxide Equivalent)
Not all greenhouse gases are created equal. Methane traps around 28 times more heat than carbon dioxide over 100 years. To simplify tracking, scientists use CO₂e as a universal unit of measurement. It standardizes the warming impact of various gases into the equivalent mass of CO₂ required to cause the same greenhouse effect.
Emission Factors
How do we know that riding a motorbike for 10 km produces a certain footprint? Carbon accounting relies on Emission Factors. These are standardized coefficients that convert activities (e.g., consuming 1 kWh of grid electricity or eating a high-meat diet) into their corresponding mass of CO₂e based on lifecycle analysis studies.
Key Concept Glossary
Core terms used throughout our simulator and coach discussions.
Emission Scopes (Scopes 1, 2, & 3)
Emissions are grouped into three categories to prevent double counting:
Scope 1 (Direct): Emissions originating directly from sources you own or control (e.g., gasoline combusted inside your car's engine).
Scope 2 (Indirect): Emissions from electricity, heating, or cooling you purchase and consume (e.g., fossil fuels burned at a power station to supply your home grid).
Scope 3 (Supply Chain): All other indirect emissions occurring along the value chain of things you buy, use, and discard (e.g., agricultural footprint of food, manufacturing of fashion products).
Eco Score
Your Eco Score is an index rating from 0 to 100 designed to measure how sustainable your baseline footprint is compared to international climate targets. A score of 100 represents a highly sustainable, low-carbon lifestyle aligned with keeping global warming below the critical 1.5°C threshold.
Mitigation vs. Offsetting
Mitigation means actively reducing or preventing emissions at their source—like choosing to bike instead of drive, or lowering heating use. Offsetting involves compensating for emissions by funding external projects that absorb carbon (e.g., tree planting). Direct mitigation is always preferred because it prevents carbon from entering the atmosphere in the first place.
What-If Simulation
A predictive tool that models hypothetical reductions (e.g., "What if I cut down shopping by 30%?"). This helps you identify the most efficient lifestyle modifications before committing to them, maximizing carbon reduction impact.
Take the First Step
Understanding your environmental footprint is the foundation of sustainable change. Complete the quick 3-minute lifestyle assessment to see your results, simulate what-if savings, and build your personalized action plan with Terra.
Fill in the fields below to establish your carbon footprint baseline. All answers remain local.
Footprint Calculation Needed
Please navigate to the Assess page and complete the lifestyle questionnaire to view your personalized carbon emissions dashboard.
Your Results Dashboard
Here is the breakdown of your lifestyle's environmental impact based on your choices.
Your Eco Score
72Eco Score
Good
Loading score details...
Monthly Carbon
0 kg
Yearly Carbon
0 kg
Highest Contributor
None
Emissions Breakdown (kg CO₂e / Month)
Footprint Calculation Needed
Please complete your assessment first before testing simulated lifestyle changes.
What-If Simulator
Adjust the inputs below and click Calculate Simulation to see potential footprint savings.
0%
Monthly Savings
0 kg
Yearly Savings
0 kg
New Projected Total
0 kg CO₂e
Projected Eco Score
0 / 100
Footprint Calculation Needed
Please complete your assessment first to receive customized, trackable green recommendations.
Your Custom Action Plan
Terra has analyzed your emissions and selected 3 high-impact actions matched to your preferences.
Weekly Commits Progress0%
Complete your assessment to unlock suggestions!
Climate Coach Terra
Discuss your results, ask questions, or layout a personalized reduction roadmap.
Ask Terra
Select a quick prompt or type your custom message below.
Methodology & Assumptions
We believe in transparent, evidence-supported estimations. Here is how your footprint is calculated.
This application provides educational carbon estimates based on simplified activity data multiplied by standard emission factors. In real carbon accounting, footprints are highly localized and rely on details like the exact fuel mix of your energy provider and vehicle engine specs.
Category
Activity Parameter
Emission Factor
Educational Assumptions
Electricity
1 kWh consumed
0.7 kg CO₂e / kWh
Divided by household members to allocate per-person impact.
Transport (Car)
1 km commuted
0.18 kg CO₂e / km
Average combustion engine passenger vehicle.
Transport (Bike)
1 km commuted
0.08 kg CO₂e / km
Commuter motorcycle or combustion scooter.
Transport (Bus)
1 km commuted
0.06 kg CO₂e / km
Standard public transit diesel/electric bus passenger average.
Transport (Train)
1 km commuted
0.04 kg CO₂e / km
Commuter rail transport systems.
Food (Vegan)
Monthly Diet
80 kg CO₂e / mo
Strictly plant-based organic/local distribution baseline.
The values correspond to global educational averages compiled from resources like the US EPA (Environmental Protection Agency) and DEFRA (Department for Environment, Food & Rural Affairs).
Scope Boundaries
Our assessment evaluates direct scope 1 emissions (personal fuel combustion in vehicles), scope 2 emissions (purchased household electricity), and simplified scope 3 emissions (indirect food lifecycle, waste decomposition, and consumer purchase manufacturing).
Privacy Policy & Terms of Service
Learn more about how your data is handled and the guidelines for using Carbon Companion AI.
Privacy Policy
Your privacy is our utmost priority. Because Carbon Companion AI is designed as a fully client-side application, it operates under the following strict privacy principles:
Zero Data Transmission: None of your inputs, carbon footprint calculation results, or lifestyle preferences are ever transmitted to external servers. All processing is done locally in your browser.
Local Storage Usage: The application uses your browser's local storage (localStorage) strictly to save your profile inputs and active checklists so that your progress is preserved when you close or refresh the page.
Complete Control: You can purge all saved profile data, calculations, and simulator history instantly by clicking the "Reset All Application Data" button.
No Analytics or Tracking: We do not deploy cookies, tracking pixels, or third-party advertising identifiers.
Terms of Service
By using Carbon Companion AI, you agree to the following terms:
Educational and Informational Tool: This application calculates educational carbon estimates using simplified activity factors. It is intended for general climate awareness and should not be used as a scientific or regulatory auditing tool.
Local Use and Open Source: The software is provided "as is", without any warranties of any kind. You are permitted to download, audit, run, and modify this application locally for personal, non-commercial purposes.
Limitation of Liability: Under no circumstances shall the creator be liable for any discrepancies in calculations, or decisions made based on suggestions generated by the application.