Top 100 Countries by Total CO₂ Emissions, 2026 Snapshot

Overview: how to read this CO2 emissions ranking

This is an absolute emissions ranking. It answers one scale question: which countries and economies produced the largest territorial fossil CO2 totals in the latest comparable EDGAR/JRC reporting year? It does not show whether a country emits more per person, whether its historical contribution is larger, or whether its imported consumption footprint is higher.

EDGAR/JRC describes fossil CO2 as IEA-EDGAR CO2. It includes fossil fuel combustion and selected industrial process sources, including cement production, metals, urea, agricultural liming and solvent use. Bio CO2, large-scale biomass burning, wildfire emissions and LULUCF sources or sinks are outside this ranking.

Why countries differ

Countries rank differently because total fossil CO2 is shaped by population size, electricity generation, coal and gas use, heavy industry, cement and steel production, oil and gas extraction, transport demand, export manufacturing and the structure of services. A large economy can rank high even with moderate emissions per person, while a smaller fuel-producing economy can have a lower total but much higher per-capita emissions.

For that reason, this page should not be read as a complete climate responsibility ranking. It is a territorial fossil CO2 snapshot, useful for comparing the scale of current annual emissions across EDGAR reporting entities.

Top 10 fossil CO2 emitting countries and economies

The Top 10 is highly concentrated. Using the EDGAR/JRC global fossil CO2 denominator of 39,632.7 MtCO2, China accounts for 33.12% of global fossil CO2, the Top 3 account for 52.8%, and the Top 10 account for 69.0%.

Top 10 fossil CO2 emitters, EDGAR/JRC 2024 values

Ranking uses unrounded EDGAR/JRC 2024 fossil CO2 values in descending order. Values are rounded to one decimal place for display.

Methodology

The metric is annual total fossil CO2 emissions by country, economy or separately reported EDGAR entity. The target year is 2024, shown as a 2026 snapshot because 2024 is the latest year in the EDGAR_2025_GHG release. Values are sorted from highest to lowest; larger fossil CO2 totals rank higher.

Display formula: source fossil CO2 value in MtCO2 is rounded to one decimal place for readability. If a source value is expressed in tonnes, tonnes divided by 1,000,000 equals MtCO2. If a source value is expressed in kilotonnes, kilotonnes divided by 1,000 also equals MtCO2.

Ranking formula: rank equals the descending order of the unrounded 2024 fossil CO2 value. Display rounding does not change rank order. Country names follow reader-friendly labels, while source notes identify combined EDGAR rows where relevant.

Limits: EDGAR provides independent, harmonised estimates using consistent methodology, but this table is not a substitute for each country’s national UNFCCC inventory. It does not measure cumulative historical emissions, imported consumption, population-adjusted emissions, climate policy ambition, emissions intensity per GDP or total greenhouse gases in CO2-equivalent.

Main ranking: Top 100 countries and economies by fossil CO2 emissions

Use the controls to search by country or economy, filter by broad region or data type, change sort order or switch between Top 10, Top 20 and all 100 entries.

Top 100 fossil CO2 emitters, EDGAR/JRC 2024 values displayed in MtCO2

Source snapshot: EDGAR_2025_GHG / IEA-EDGAR CO2, 2024 fossil CO2 values. Worldometer is used only as a secondary web-readable cross-check. All values are rounded after ranking.

Insights from the Top 100 fossil CO2 ranking

What this carbon emissions ranking means

This table is best used as a scale ranking. It identifies where the largest annual fossil CO2 totals are reported, which is useful for climate policy context, energy-system analysis, industrial comparisons and search intent around the biggest CO2 emitting countries.

A higher rank does not automatically mean higher emissions per person, higher historical responsibility or weaker climate policy. A large economy can rank high because of population and industrial output, while a smaller fossil-fuel producer can have a lower total but a much higher per-capita footprint.

The main interpretation risk is mixing metrics. Total fossil CO2, CO2 per capita, total GHG in CO2-equivalent, consumption-based footprints and cumulative historical emissions are separate rankings. They should not be merged into one table without clear notes.

FAQ

Sources