CO2 Emissions by Country

What this CO2 comparison covers

CO2 Emissions by Country lists 25 major emitters with four figures each: total annual carbon dioxide emissions in million tonnes (Mt), emissions per person in tonnes, each country's share of the global total, and a renewable energy percentage. Together these 25 countries account for about 81% of global emissions in this dataset. Looking at total and per-person figures side by side is the main point: China is the largest emitter here at 11,400 Mt, while Saudi Arabia has the highest per-capita figure at 16.2 tonnes and India, the third-largest total emitter, sits at 1.9 tonnes per person.

How to use it

1. The banner shows the largest total emitter in the dataset with its global share, per-capita figure and renewable percentage.
2. Filter the CO2 Emissions Ranking by Country table with the search box or the region menu, which includes a separate Middle East group.
3. Choose a metric in the sort menu (Total CO2, Per Capita, Global Share, Renewable %) or click a column heading; clicking the same heading again reverses the order. The # badge is the row's position in the current view.
4. Compare the two top-10 charts, one by total emissions and one by emissions per person, and the renewable share chart, where bars are dark green at 60% or more, green from 30%, amber from 15% and red below that.
5. Under Compare Countries, tap two to five chips (China, the United States and India start selected) to overlay them on a radar chart.

How the page calculates and draws

All figures are hard-coded in the page's JavaScript; filtering, sorting and the charts are computed in your browser, and nothing you type leaves it. Chart.js 4.4.7 is downloaded from cdn.jsdelivr.net when the page opens. On the radar chart, total emissions, per-capita emissions and global share are each scaled against the highest value among the 25 countries, and the renewable share against 100%, so every axis runs from 0 to 100. A country touching the edge simply has the dataset's maximum for that measure; hover over a point to read the actual value.

Per-capita emissions are total emissions divided by population, so small, energy-intensive economies can rank high per person while contributing little to the world total. Global share is the country's total divided by the world total, and the shares listed here imply a world total of roughly 37,000 Mt.

Data sources and limitations

The page attributes its data to the Global Carbon Project and Our World in Data. It does not give a reference year, and the values are a static, rounded snapshot bundled with the page, not a live feed. Emissions change every year, so check those sources for the latest release before citing a number.

• The page does not state whether the totals include land-use change, whether they are production-based or consumption-based (which decides whether emissions from exported goods count against the maker or the buyer), or whether the renewable column refers to electricity or to all energy use.
• The renewable figure for France (75%) is described on this page as reflecting its nuclear and renewable mix. Nuclear power is low-carbon but not renewable, so read the column as a rough indicator rather than a strict renewable share.
• Only carbon dioxide is covered; methane and other greenhouse gases are not included.
• Regional labels are the page's own, with Iran and Saudi Arabia in a Middle East group and Russia and Turkey in Europe.

Frequently asked questions

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