Brunei vs Sierra Leone: Annual greenhouse gas emissions by world region
Brunei
14.96 million tonnes of CO₂ equivalents
in 2024
Sierra Leone
16.29 million tonnes of CO₂ equivalents
in 2024
Brunei rank
136th
Sierra Leone rank
134th
Annual greenhouse gas emissions by world region over time
- Brunei
- Sierra Leone
How they compare
Sierra Leone currently reports 16.29 million tonnes of CO₂ equivalents against 14.96 million tonnes of CO₂ equivalents in Brunei, a difference of 1.33 million tonnes of CO₂ equivalents.
That makes Sierra Leone's figure about 1.1 times Brunei's.
The two have swapped places 14 times across 175 shared years of data; in 1850 it was Sierra Leone ahead.
Brunei ranks 136th and Sierra Leone ranks 134th of 199 countries.
Across the 18 decades both report, Brunei averaged higher in 1 and Sierra Leone in 17.
Head to head by decade
| Decade | Brunei | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1850s | 58,882 tonnes of CO₂ equivalents | 44.67 million tonnes of CO₂ equivalents | 44.61 million tonnes of CO₂ equivalents | Sierra Leone |
| 1860s | 59,706 tonnes of CO₂ equivalents | 12.28 million tonnes of CO₂ equivalents | 12.22 million tonnes of CO₂ equivalents | Sierra Leone |
| 1870s | 79,830 tonnes of CO₂ equivalents | 4.85 million tonnes of CO₂ equivalents | 4.77 million tonnes of CO₂ equivalents | Sierra Leone |
| 1880s | 145,506 tonnes of CO₂ equivalents | 3.88 million tonnes of CO₂ equivalents | 3.74 million tonnes of CO₂ equivalents | Sierra Leone |
| 1890s | 140,256 tonnes of CO₂ equivalents | 3.07 million tonnes of CO₂ equivalents | 2.93 million tonnes of CO₂ equivalents | Sierra Leone |
| 1900s | 247,514 tonnes of CO₂ equivalents | 2.58 million tonnes of CO₂ equivalents | 2.33 million tonnes of CO₂ equivalents | Sierra Leone |
| 1910s | 422,898 tonnes of CO₂ equivalents | 1.75 million tonnes of CO₂ equivalents | 1.32 million tonnes of CO₂ equivalents | Sierra Leone |
| 1920s | 360,054 tonnes of CO₂ equivalents | 6.47 million tonnes of CO₂ equivalents | 6.11 million tonnes of CO₂ equivalents | Sierra Leone |
| 1930s | 819,978 tonnes of CO₂ equivalents | 7.28 million tonnes of CO₂ equivalents | 6.46 million tonnes of CO₂ equivalents | Sierra Leone |
| 1940s | 3.52 million tonnes of CO₂ equivalents | 9.35 million tonnes of CO₂ equivalents | 5.83 million tonnes of CO₂ equivalents | Sierra Leone |
| 1950s | 978,267 tonnes of CO₂ equivalents | 7.46 million tonnes of CO₂ equivalents | 6.48 million tonnes of CO₂ equivalents | Sierra Leone |
| 1960s | 1.10 million tonnes of CO₂ equivalents | 7.83 million tonnes of CO₂ equivalents | 6.73 million tonnes of CO₂ equivalents | Sierra Leone |
| 1970s | 10.00 million tonnes of CO₂ equivalents | 8.87 million tonnes of CO₂ equivalents | 1.13 million tonnes of CO₂ equivalents | Brunei |
| 1980s | 6.54 million tonnes of CO₂ equivalents | 10.95 million tonnes of CO₂ equivalents | 4.40 million tonnes of CO₂ equivalents | Sierra Leone |
| 1990s | 8.83 million tonnes of CO₂ equivalents | 8.99 million tonnes of CO₂ equivalents | 159,622 tonnes of CO₂ equivalents | Sierra Leone |
| 2000s | 10.29 million tonnes of CO₂ equivalents | 55.40 million tonnes of CO₂ equivalents | 45.10 million tonnes of CO₂ equivalents | Sierra Leone |
| 2010s | 13.40 million tonnes of CO₂ equivalents | 23.21 million tonnes of CO₂ equivalents | 9.82 million tonnes of CO₂ equivalents | Sierra Leone |
| 2020s | 15.44 million tonnes of CO₂ equivalents | 16.30 million tonnes of CO₂ equivalents | 857,520 tonnes of CO₂ equivalents | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual greenhouse gas emissions by world region, Brunei or Sierra Leone?
- Sierra Leone, at 16.29 million tonnes of CO₂ equivalents against 14.96 million tonnes of CO₂ equivalents in Brunei as of 2024.
- What is the difference in annual greenhouse gas emissions by world region between Brunei and Sierra Leone?
- 1.33 million tonnes of CO₂ equivalents, with Sierra Leone ahead.
- How many years of comparable data are there for Brunei and Sierra Leone?
- 175 years are reported by both, from 1850 to 2024.
- How do Brunei and Sierra Leone rank globally for annual greenhouse gas emissions by world region?
- Brunei ranks 136th and Sierra Leone ranks 134th of 199 countries.
- Where does this data come from?
- Jones et al. (2025) – with major processing by Our World in Data, published as Annual greenhouse gas emissions by world region. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Greenhouse gas emissions are measured in tonnes of carbon dioxide-equivalents over a 100-year timescale.