Iran vs Japan: CO₂ emissions by sector
Iran
162.73 million tonnes
in 2023
Japan
89.68 million tonnes
in 2023
Iran rank
4th
Japan rank
7th
CO₂ emissions by sector over time
- Iran
- Japan
How they compare
Iran currently reports 162.73 million tonnes against 89.68 million tonnes in Japan, a difference of 73.05 million tonnes.
That makes Iran's figure about 1.8 times Japan's.
The two have swapped places 3 times across 34 shared years of data; in 1990 it was Japan ahead.
Iran ranks 4th and Japan ranks 7th of 187 countries.
Across the 4 decades both report, Iran averaged higher in 2 and Japan in 2.
Head to head by decade
| Decade | Iran | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 65.63 million tonnes | 133.00 million tonnes | 67.37 million tonnes | Japan |
| 2000s | 108.48 million tonnes | 146.36 million tonnes | 37.88 million tonnes | Japan |
| 2010s | 125.59 million tonnes | 117.31 million tonnes | 8.28 million tonnes | Iran |
| 2020s | 154.34 million tonnes | 98.28 million tonnes | 56.05 million tonnes | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher co₂ emissions by sector, Iran or Japan?
- Iran, at 162.73 million tonnes against 89.68 million tonnes in Japan as of 2023.
- What is the difference in co₂ emissions by sector between Iran and Japan?
- 73.05 million tonnes, with Iran ahead.
- How many years of comparable data are there for Iran and Japan?
- 34 years are reported by both, from 1990 to 2023.
- How do Iran and Japan rank globally for co₂ emissions by sector?
- Iran ranks 4th and Japan ranks 7th of 187 countries.
- Where does this data come from?
- Climate Watch (2026) – with major processing by Our World in Data, published as CO₂ emissions by sector. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Emissions are measured in tonnes.