Top CO₂ emitters
Total emissions only — China's lead shrinks dramatically when you compare per-capita.
Headline finding
China leads the world for top co₂ emitters at 11,900 megatonnes CO₂/year.
The full top 25: Top CO₂ emitters
Click any country to read its full profile.
- 1 China 11,900
- 2 United States 4,910
- 3 India 2,950
- 4 Russia 1,750
- 5 Japan 1,010
- 6 Iran 779
- 7 Saudi Arabia 700
- 8 Indonesia 692
- 9 Germany 666
- 10 South Korea 624
- 11 Canada 575
- 12 Brazil 482
- 13 Mexico 489
- 14 Australia 391
- 15 Turkey 482
- 16 United Kingdom 332
- 17 South Africa 435
- 18 Italy 312
- 19 France 285
- 20 Poland 296
- 21 Thailand 281
- 22 Vietnam 343
- 23 Spain 217
- 24 Argentina 198
- 25 Egypt 250
What the numbers show
China's lead at the top of this ranking is 142.4% above the second-place country — a margin so wide it suggests we're looking at a structural advantage rather than a close-run race.
The five countries leading the table — China, United States, India, Russia, Japan — together set the global benchmark. The next 20 countries fill the rest of the table, with Egypt anchoring the list at 250.
Figures are drawn from Global Carbon Project 2023. We use this source because it produces a single, internally consistent dataset rather than aggregating from national statistics offices, which makes year-on-year comparison reliable. The next update is expected when the source publishes its next annual release — see the methodology section below for which year of data is currently shown.
Methodology and caveats
- What this measures
- megatonnes CO₂/year
- Source
- Global Carbon Project 2023
- Coverage
- Top 25 countries shown. Full source dataset covers all 195 sovereign states where data is available.
- Refresh cadence
- Updated annually as the source publishes new figures, typically autumn or spring.
- Known caveat
- Country definitions follow the source: where the UN, the World Bank and the CIA Factbook disagree on borders or recognition, we use the figure as published rather than reconciling between bodies. Comparisons across rankings should be made with this in mind.
Frequently asked
Which country tops the ranking for top co₂ emitters?
China leads with 11,900 megatonnes CO₂/year. United States is second at 4,910, with India in third place. Full top-10 with sources is above.
What's the source for the top co₂ emitters ranking?
The figures come from Global Carbon Project 2023. We use this source because it publishes a complete country-by-country dataset using consistent methodology — the alternative of mixing national statistics offices would compromise comparability. Updated annually with the latest available vintage of the data.
How often are the top co₂ emitters figures updated?
Once a year, in line with the source institution's publishing schedule. Major institutions like the World Bank, IMF and UNESCO publish annual updates in different months — typically autumn or spring — and the figures here reflect the most recently published vintage. The source footer on the ranking table shows which year's data is currently displayed.