Greenhouse gas emissions include carbon dioxide, methane and nitrous oxide from all sources, including agriculture and land-use change. They are measured in metric tons of carbon dioxide-equivalents over a 100-year timescale.
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Global per capita greenhouse gas emissions 2023, by OECD country
Australia had the highest per capita greenhouse gas emissions of all OECD member countries in 2023, at ** metric tons of carbon dioxide equivalent (tCOâ‚‚e). Canadians were the second-worst carbon polluters that year, with average emissions of just over ** ³Ù°ä°¿â‚‚e/³¦²¹±è. 13 of the ** OECD member countries had per capita emissions below the global average in 2023, with Costa Rica, the most recent OECD member, averaging just below **** ³Ù°ä°¿â‚‚e/³¦²¹±è.
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OWID. (November 21, 2024). Per capita greenhouse gas emissions in OECD countries in 2023 (in metric tons of carbon dioxide equivalent) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/478783/leading-countries-based-on-per-capita-greenhouse-gas-emissions/
OWID. "Per capita greenhouse gas emissions in OECD countries in 2023 (in metric tons of carbon dioxide equivalent)." Chart. November 21, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/478783/leading-countries-based-on-per-capita-greenhouse-gas-emissions/
OWID. (2024). Per capita greenhouse gas emissions in OECD countries in 2023 (in metric tons of carbon dioxide equivalent). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/478783/leading-countries-based-on-per-capita-greenhouse-gas-emissions/
OWID. "Per Capita Greenhouse Gas Emissions in Oecd Countries in 2023 (in Metric Tons of Carbon Dioxide Equivalent)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 21 Nov 2024, /statistics/478783/leading-countries-based-on-per-capita-greenhouse-gas-emissions/
OWID, Per capita greenhouse gas emissions in OECD countries in 2023 (in metric tons of carbon dioxide equivalent) ÌÇÐÄÆƽâ°æ, /statistics/478783/leading-countries-based-on-per-capita-greenhouse-gas-emissions/ (last visited July 27, 2026)
Per capita greenhouse gas emissions in OECD countries in 2023 (in metric tons of carbon dioxide equivalent) [Graph], OWID, November 21, 2024. [Online]. Available: /statistics/478783/leading-countries-based-on-per-capita-greenhouse-gas-emissions/
