The average carbon footprint per person is approximately 6.6 tons CO₂e per year globally, based on 2023 data from the University of Michigan Center for Sustainable Systems. However, this global average masks enormous variation: the average US resident produces 17.6 tons CO₂e per year — more than twice the global mean — while the average person in many low-income countries produces less than 1 ton.
The global average is a useful reference point, but it tells you little about what a typical footprint looks like in practice. This post breaks down the data by country, by category, and by what these numbers mean for anyone trying to reduce their own emissions.
Global average carbon footprint: the data
The most widely cited figure for global average CO₂ emissions per capita is approximately 4.7 metric tons of CO₂ from fossil fuels alone, based on 2023 data from the Global Carbon Project. However, when we include all greenhouse gases — methane, nitrous oxide, and others — expressed as CO₂ equivalent (CO₂e), and add consumption-based emissions from goods and services, the figure rises to approximately 6.6 tons CO₂e per person per year.
Note on measurement: CO₂-only figures and CO₂e figures are not directly comparable. CO₂e includes all greenhouse gases converted to a common warming scale using GWP100 values from IPCC AR6. Decarb and most personal carbon calculators report in tons CO₂e — which is why our figures differ from some headline CO₂-only statistics.
Average carbon footprint by country
National averages vary by a factor of more than 100 between the highest and lowest emitting countries. The table below shows estimated per capita carbon footprints for key countries, based on EDGAR and University of Michigan data.
| Country | Estimated per capita footprint | Relative to global average |
|---|---|---|
| United States | 17.6 tons CO₂e | 2.7× global average |
| Australia | 15.1 tons CO₂e | 2.3× global average |
| Canada | 14.2 tons CO₂e | 2.2× global average |
| Russia | 14.4 tons CO₂e | 2.2× global average |
| China | 9.2 tons CO₂e | 1.4× global average |
| Germany | 8.4 tons CO₂e | 1.3× global average |
| UK | 7.0 tons CO₂e | 1.1× global average |
| Global average | 6.6 tons CO₂e | — |
| Brazil | 3.1 tons CO₂e | 0.5× global average |
| India | 2.1 tons CO₂e | 0.3× global average |
| Sub-Saharan Africa (avg) | ~0.7 tons CO₂e | 0.1× global average |
The gap between the US and low-income countries is stark. A person in the US produces roughly the same emissions in two days as the average person in Mali or Niger produces in an entire year — a figure that underscores why consumption-based emissions accounting matters alongside territorial measurements.
What makes up the average US carbon footprint?
For US residents — the primary Decarb audience — the 17.6 tons CO₂e average breaks down across several major categories. Transport and energy typically dominate, but financed emissions and consumption add substantially to the total once included.
| Category | Estimated contribution (US average) | Notes |
|---|---|---|
| Ground transport | 3.1–4.5 tons CO₂e | Depends on vehicle type and mileage |
| Home energy | 1.0–2.5 tons CO₂e | Depends on housing type and energy source |
| Food and diet | 1.2–2.3 tons CO₂e | Depends on dietary pattern |
| Flights | 0–3.0+ tons CO₂e | Highly variable; zero for non-flyers |
| Goods and services | 0.7–3.6 tons CO₂e | Depends on monthly spending |
| Financed emissions | 2.0–6.0 tons CO₂e | Depends on bank and investment choices |
The wide ranges within each category explain why individual footprints vary so significantly even within the same country. Two people living in the same city, earning similar incomes, can have footprints that differ by a factor of three or more depending on their transport, diet, and financial choices.
What does this mean for reduction?
Context matters here. The global average of 6.6 tons CO₂e per person is itself well above what climate science suggests we need to reach. To limit warming to 1.5°C, estimates from the IPCC suggest the sustainable per capita budget is approximately 2–2.5 tons CO₂e per year by 2050. The average US resident therefore needs to reduce their footprint by roughly 85% over the next 25 years.
However, not all reductions carry equal weight. For most US residents, the highest-impact actions concentrate in three categories: switching away from a petrol vehicle, shifting energy to renewables, and changing financed emissions through banking and investment choices. Diet changes — particularly reducing meat and dairy — add meaningfully to this. Together, these four levers account for the majority of what most individuals can reduce.
The global average tells you where you stand relative to others. Your individual breakdown tells you where to act. Those are different questions — and the second one is more useful.
Frequently asked questions
What is the average carbon footprint per person globally?
The average carbon footprint per person is approximately 6.6 tons CO₂e per year globally, based on 2023 data including all greenhouse gases. CO₂-only figures are lower — around 4.7 metric tons — because they exclude methane, nitrous oxide, and other gases.
What is the average carbon footprint per person in the US?
The average US carbon footprint is approximately 17.6 tons CO₂e per year — more than twice the global average. This reflects high rates of car ownership, larger homes, energy-intensive diets, and higher consumption of goods and services compared to global norms.
Why does the average carbon footprint vary so much between countries?
National footprints vary because of differences in energy mix, transport infrastructure, diet, income levels, and industrial activity. Wealthier countries tend to have higher per capita footprints due to greater consumption. Consumption-based accounting — which attributes emissions from imported goods to the consumer country — can shift these rankings significantly.
What is the target carbon footprint per person to limit warming to 1.5°C?
IPCC estimates suggest a sustainable per capita carbon budget of approximately 2–2.5 tons CO₂e per year by 2050 to limit warming to 1.5°C. The average US resident currently produces around 17.6 tons — roughly seven to eight times above this target.
How does my carbon footprint compare to the global average?
If you live in the US and own a car, eat meat regularly, and have standard banking and investments, your footprint likely sits well above the global average of 6.6 tons CO₂e per year. Calculating your individual footprint is the only way to know with confidence which categories drive your number.
How does your footprint compare to these averages?
Calculate your personal estimated carbon footprint in 3 minutes. Based on verified emission factors from EPA, IPCC, and IEA. No account required.
Sources
Global average figure (6.6 tons CO₂e): University of Michigan Center for Sustainable Systems, Carbon Footprint Factsheet (2024), sourcing EDGAR GHG emissions database. US figure (17.6 tons CO₂e): same source. Territorial CO₂-only figures: Global Carbon Project, Global Carbon Budget 2024. Country-level per capita figures: EDGAR (2023). IPCC 1.5°C budget: IPCC Sixth Assessment Report, Working Group III (2022).
All Decarb calculator results express estimated emissions in tons CO₂e using GWP100 values from IPCC AR6. Full methodology: decarb.co/methodology
