South Koreavs United Kingdom
On Global Firepower's 2026 index, South Korea (#5) holds a narrow edge over the United Kingdom (#8).
- The United Kingdom has nuclear weapons; South Korea has none.
- The United Kingdom has aircraft carriers; South Korea has none.
- South Korea fields 6.4× as many tanks.
Who leads in each area
- People and moneySouth Korea leads 3 of 4
- Land forcesSouth Korea leads 5 of 5
- Air powerSouth Korea leads 6 of 7
- Naval forcesSouth Korea leads 6 of 7
- Nuclear weaponsUnited Kingdom leads 2 of 2
Leads count raw numbers in each category. Larger is not always stronger: a modern fleet can beat a bigger, older one.
People and money
Who can be put in uniform, and how much is spent keeping them there.
Spending is SIPRI's 2025 estimate in US dollars (South Korea: 2.6% of GDP; United Kingdom: 2.4% of GDP).
Land forces
Armour and artillery: the weight an army can put on the ground.
Air power
Fixed-wing and rotary aircraft across all branches.
Naval forces
Hull counts, from carriers down to patrol boats.
Nuclear weapons
Estimated warheads in military stockpiles, January 2026.
Compare other countries
Related matchups
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Profiles: South Korea and United Kingdom. Sources: Global Firepower 2026, SIPRI Military Expenditure 2025 (Apr 2026), SIPRI Yearbook 2026: World Nuclear Forces.