Australia vs Saudi Arabia

Australia scores 77.1 in the NationsTree Index (10th in the world) and Saudi Arabia scores 76.5 (15th), a gap of 0.5 points. Their trees are 30 m and 35 m tall; tree height grows with real GDP and is adjusted by the index.

Saudi Arabia has 34% more people than Australia. Australia is 3.6 times larger than Saudi Arabia by land area. The economy of Saudi Arabia is 37% larger than that of Australia (GDP at purchasing power parity). Population: Australia 27.6 million and Saudi Arabia 37.0 million (2025).

GDP per person at purchasing power parity is $73,784 in Saudi Arabia and $71,934 in Australia (2025, international dollars). People in Australia live on average 4.1 years longer (83.1 vs 79.0 years).

Of 33 indicators reported by both countries, Australia ranks higher in the world on 25 and Saudi Arabia on 8. Australia is clearly stronger in environment & energy, institutions & safety and society & health. Saudi Arabia is clearly stronger in military and main industries.

As a nation, Saudi Arabia is the older of the two (statehood since 1727, 299 years), compared with Australia (since 1901). Over the last five years Saudi Arabia improved faster (direction score 100 vs 34 out of 100).