Country A
United States
#1 global · #1 in North America
95.0Military Strength Score / 100
2026 MILITARY DATA COMPARISON
United States vs South Korea Military Power
A structured comparison across 27 available indicators. Country A is always cyan; Country B is always amber. Larger inventories are not predictions of combat outcomes.
Country B
South Korea
#6 global · #4 in Asia
27.2Military Strength Score / 100
MSS gap67.8 pointsUnited States has the higher score
Reported values higherA 21 · B 60 tied; “higher” does not always mean “better”
Global positionsA #1 · B #6of 145 country profiles
Change the two countries
Military expenditure trend
Nominal current US dollars from World Bank WDI indicator MS.MIL.XPND.CD. The underlying series is attributed to SIPRI and may differ from the inventory-edition budget above.
A · United StatesB · South Korea
A · 2024$997.3B
B · 2024$47.6B
A
United StatesCYAN COLUMN
B
South KoreaAMBER COLUMN
Country context
PopulationUnited States +290,100,293
A · United States341,784,857World Bank 2025
B · South Korea51,684,564World Bank 2025
Nominal GDPUnited States +$28.90T
A · United States$30.77TWorld Bank 2025
B · South Korea$1.87TWorld Bank 2025
Land areaUnited States +9,049,820 km²
A · United States9,147,420 km²World Bank 2023
B · South Korea97,600 km²World Bank 2023
Defense budget per residentUnited States +$1.6K
A · United States$2.4KDerived · population 2025
B · South Korea$866.8Derived · population 2025
Active troops per 1,000 residentsSouth Korea +4.81
A · United States3.90Derived · population 2025
B · South Korea8.71Derived · population 2025
Manpower
Active troopsUnited States +883,030
A · United States1,333,030
B · South Korea450,000
Reserve troopsSouth Korea +2,300,500
A · United States799,500
B · South Korea3,100,000
ParamilitarySouth Korea +120,000
A · United States0
B · South Korea120,000
Air force
Total aircraftUnited States +11,492
A · United States13,032
B · South Korea1,540
Fighter aircraftUnited States +1,549
A · United States1,791
B · South Korea242
Attack aircraftUnited States +828
A · United States926
B · South Korea98
Transport aircraftUnited States +4,029
A · United States4,402
B · South Korea373
HelicoptersUnited States +5,086
A · United States5,913
B · South Korea827
Attack helicoptersUnited States +911
A · United States1,024
B · South Korea113
Navy
Total naval assetsUnited States +31
A · United States200
B · South Korea169
Aircraft carriersUnited States +11
A · United States11
B · South Korea0
DestroyersUnited States +69
A · United States83
B · South Korea14
SubmarinesUnited States +44
A · United States66
B · South Korea22
FrigatesSouth Korea +18
A · United States0
B · South Korea18
Army and ground forces
TanksUnited States +2,835
A · United States4,666
B · South Korea1,831
Armored vehiclesUnited States +292,200
A · United States409,660
B · South Korea117,460
Self-propelled artillerySouth Korea +1,259
A · United States1,521
B · South Korea2,780
Towed artillerySouth Korea +3,922
A · United States1,878
B · South Korea5,800
Multiple-launch rocket systemsUnited States +1,206
A · United States1,731
B · South Korea525
Financial and strategic
Defense budgetUnited States +$786.7B
A · United States$831.5B
B · South Korea$44.8B
Defense budget share of GDPUnited States +1.5%
A · United States3.2%
B · South Korea1.7%
Estimated nuclear warheadsUnited States +5,042
A · United States5,042
B · South Korea0
What this comparison cannot tell you
A larger reported inventory or MSS score is not a prediction of military success. Readiness, training, maintenance, geography, logistics, technology quality, alliances, doctrine and objectives sit outside this table.
Review sources, weights and limitations →Country inventory baseline: 2026 edition. Population, GDP, land-area context and military-expenditure trends: World Bank WDI, with the observation year shown at the decision point. Nuclear totals: FAS beginning-of-2026 estimates. Source links and structure reviewed August 25, 2026.