When people argue about climate responsibility, they are usually arguing — knowingly or not — about this dataset. The 2023 CO2 emissions ranking shows a world where carbon output is extraordinarily concentrated in a handful of large economies.

China's emissions exceed the next three countries combined

China emitted 11,474 million tonnes of CO2 in 2023. That is more than the United States (5,007), India (2,830) and Russia (1,764) put together, which sum to roughly 9,600 million tonnes. No other single fact explains more about why international climate negotiations revolve around Beijing's energy policy.

The context matters, though. China is also the world's manufacturing hub — a meaningful share of its emissions are generated producing goods consumed in Europe and North America. And on a per-person basis, China's emissions remain well below those of the United States.

The United States: high output, high per-capita footprint

At 5,007 million tonnes, the US is the world's second-largest emitter with a population barely a quarter of China's. Per capita, an average American is responsible for roughly double the emissions of an average Chinese citizen and several times that of an average Indian.

India: the number to watch

India's 2,830 million tonnes place it third, and unlike Europe or the US, its emissions are still rising as hundreds of millions of people gain access to reliable electricity, vehicles and air conditioning. How India powers its growth — coal versus renewables — is arguably the single biggest variable in global emissions over the next two decades.

The rest of the top eight

Russia (1,764), Japan (1,067), Iran (720), Germany (636) and South Korea (611) complete the list. Germany's figure is notable for how far it has fallen: once well above 1,000 million tonnes, its emissions have declined as renewables displaced coal. Countries like Iceland, Costa Rica and Norway show what the far end of that transition looks like, running on 98–100% renewable electricity.

The takeaway

The top three emitters — China, the US and India — account for the large majority of the emissions in this ranking. Any serious path to lower global emissions runs through those three capitals, but the per-capita numbers remind us the burden of responsibility is not distributed the way the totals suggest.

Dig into the interactive chart: CO2 Emissions by Country 2023.