United Kingdom vs United States of America Military Comparison
Side-by-side military strength: active personnel, defense budgets, air force aircraft, and naval assets.
United Kingdom
200K active troops
$70B budget
VS
United States of America
1M active troops
$800B budget
227
Tanks
6,612
5,015
Armored Vehicles
45,193
215
Artillery
2,837
44
Rocket Systems
1,366
137
Fighter Jets
1,957
332
Helicopters
5,400
76
Warships
472
11
Submarines
68
Nuclear Arsenal
United States of America
LARGEST
5,044
WARHEADS
United Kingdom
4.5% OF LARGEST
225
WARHEADS
United States of America holds
22.4×
the warheads of United Kingdom
Warheads Over Time
Estimated total warhead inventories — Federation of American Scientists / SIPRI
Defense Budget vs GDP
Historical defense spending and how it compares to each country's GDP. The % of GDP view normalises for economic size so smaller economies aren't drowned out by absolute dollar figures.
Defense Budget Over Time ($B)
Defense Budget as % of GDP
Source: World Bank Open Data API (MS.MIL.XPND.CD)
Military Active Personnel
United States of America
LARGEST
1.35M
TROOPS
United Kingdom
11.4% OF LARGEST
153.29K
TROOPS
United States of America has 8.79× the active personnel of United Kingdom
Air Force Total Aircraft
United States of America
LARGEST
13.3K
AIRCRAFT
United Kingdom
5.5% OF LARGEST
733
AIRCRAFT
United States of America has 18.14× the aircraft of United Kingdom
Total Naval Assets
Land Forces — Detailed Metrics
| Metric |
United Kingdom
|
United States of America
|
|---|---|---|
| Active Personnel | 153,290 | 1,347,300 |
| Reserve Personnel | 81,500 | 799,500 |
| Total Military Personnel | 234,790 | 2,146,800 |
| Defense Budget (USD) | $68,400,000,000 | $816,000,000,000.0 |
| Tanks | 227 | 6,612 |
| Armored Vehicles | 5,015 | 45,193 |
| Self-Propelled Artillery | 89 | 1,498 |
| Towed Artillery | 126 | 1,339 |
| Rocket Projectors | 44 | 1,366 |
Air Force — Detailed Metrics
| Metric |
United Kingdom
|
United States of America
|
|---|---|---|
| Total Aircraft | 733 | 13,300 |
| Fighters | 137 | 1,957 |
| Attack Aircraft | 143 | 2,800 |
| Transport Aircraft | 288 | 945 |
| Trainer Aircraft | 175 | 2,600 |
| Helicopters | 332 | 5,400 |
| Attack Helicopters | 50 | 983 |
Naval Forces — Detailed Metrics
| Metric |
United Kingdom
|
United States of America
|
|---|---|---|
| Total Naval Assets | 76 | 472 |
| Aircraft Carriers | 2 | 11 |
| Destroyers | 6 | 73 |
| Frigates | 13 | 0 |
| Corvettes | 0 | 23 |
| Submarines | 11 | 68 |
| Patrol Vessels | 22 | 13 |
| Mine Warfare Vessels | 13 | 8 |
See economy, trade, demographics, and more for this comparison.
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Data compiled from World Bank, IMF, Global Firepower, SIPRI, Numbeo, and Pew Research.
Last updated June 2026.
Sources & methodology