Global military stockpiles totaled 12,121 nuclear warheads in early 2023. Russia held 5,580 warheads and the United States held 5,044, with deployed strategic limits of 1,549 for Russia and 1,419 for the United States under New START. The figures also quantify effects from a one-megaton blast fireball and radiation to large-scale fallout and nuclear winter scenarios.
Key Takeaways
- As of 2023, Russia possesses 5,580 nuclear warheads, including 1,549 deployed strategic warheads under New START
- The United States has 5,044 nuclear warheads as of 2023, with 1,419 deployed strategic warheads
- China maintains about 410 nuclear warheads in 2023, with projections to reach 1,000 by 2030
- A single 1-megaton nuclear explosion at optimum height produces a fireball 1.8 km in diameter and thermal radiation causing 3rd-degree burns up to 19 km away
- The Hiroshima bomb killed 70,000-80,000 instantly, with total deaths reaching 140,000 by end of 1945 due to blast, heat, and radiation
- Nagasaki's Fat Man bomb caused 40,000 immediate deaths, totaling 70,000-80,000 by year's end
- The first nuclear test, code-named Trinity, was detonated by the United States on July 16, 1945, at the Alamogordo Bombing Range in New Mexico, with a yield of approximately 21 kilotons of TNT
- The Manhattan Project, initiated in 1942, employed over 130,000 people at its peak and cost about $2 billion (equivalent to $23 billion in 2023 dollars) to develop the first atomic bombs
- Little Boy, the uranium-based bomb dropped on Hiroshima on August 6, 1945, had a yield of 15 kilotons and was fueled by 64 kg of highly enriched uranium
- Worldwide, 2,056 nuclear tests have been conducted since 1945, totaling over 440 megatons yield
- The Soviet Union performed 715 nuclear tests at Semipalatinsk, exposing 1.5 million people to radiation
- U.S. Nevada Test Site hosted 928 tests, 100 atmospheric, contaminating 1,000+ km²
- The Nuclear Non-Proliferation Treaty (NPT) entered into force on March 5, 1970, with 191 states parties
- New START Treaty between U.S. and Russia limits deployed strategic warheads to 1,550 each, expires 2026
- The Intermediate-Range Nuclear Forces (INF) Treaty eliminated 2,692 missiles by 1991, terminated 2019
In 2023, global nuclear arsenals totaled 12,121 warheads, with Russia and the US holding the most.
Related reading
01 · Category
Current Arsenals and Stockpiles14 stats
01
As of 2023, Russia possesses 5,580 nuclear warheads, including 1,549 deployed strategic warheads under New START
02
The United States has 5,044 nuclear warheads as of 2023, with 1,419 deployed strategic warheads
03
China maintains about 410 nuclear warheads in 2023, with projections to reach 1,000 by 2030
04
France has 290 operational nuclear warheads as of 2023, all deployed on submarines and aircraft
05
The United Kingdom possesses 225 nuclear warheads, with 120 operationally available in 2023
06
India has approximately 172 nuclear warheads as of 2023, deliverable by aircraft, missiles, and submarines
07
Pakistan holds 170 nuclear warheads in 2023, primarily for battlefield and short-range use
08
Israel is estimated to have 90 nuclear warheads in 2023, undeclared but widely acknowledged
09
North Korea has 30 nuclear warheads assembled as of 2023, with fissile material for 50-90 more
10
Global nuclear warhead stockpiles total 12,121 in military inventories as of early 2023
11
Russia has 1,710 non-strategic nuclear warheads in 2023, mostly in central storage
12
The U.S. B61-12 gravity bomb is the only nuclear weapon assigned to NATO aircraft, with 100 in Europe
13
China's DF-41 ICBM can carry up to 10 MIRVed warheads with a range of 12,000-15,000 km
14
U.S. Ohio-class SSBNs carry 20 Trident II D5 missiles each, with up to 8 warheads per missile
Interpretation
Current Arsenals and Stockpiles Interpretation
With humanity's fate hinging on a stockpile of over twelve thousand city-erasers, it is a darkly absurd comfort that the two biggest arsenals are locked in a tense, trembling stalemate while newer players hurry to join a game no one can possibly win.
02 · Category
Destructive Effects16 stats
01
A single 1-megaton nuclear explosion at optimum height produces a fireball 1.8 km in diameter and thermal radiation causing 3rd-degree burns up to 19 km away
02
The Hiroshima bomb killed 70,000-80,000 instantly, with total deaths reaching 140,000 by end of 1945 due to blast, heat, and radiation
03
Nagasaki's Fat Man bomb caused 40,000 immediate deaths, totaling 70,000-80,000 by year's end
04
A modern 300-kiloton warhead on a city like New York would kill 600,000-800,000 instantly and injure millions more
05
Nuclear winter from 100 Hiroshima-sized bombs could cause global famine killing up to 2 billion people
06
Ionizing radiation from a 1-megaton ground burst contaminates 1,000-2,000 km² with lethal doses initially
07
Blast overpressure of 5 psi from a 100-kt airburst destroys most residential buildings within 4.7 km radius
08
Thermal flash from a 20-kiloton explosion ignites fires covering 11 km²
09
Electromagnetic pulse (EMP) from a high-altitude 1.4-megaton burst disables electronics over 2,200 km radius
10
Fallout from a 15-megaton surface burst like Tsar Bomba would cover 25,000 km² with heavy contamination
11
Acute radiation syndrome kills 50% of exposed within 30 days at 3-4 Gy dose
12
A full-scale U.S.-Russia nuclear exchange could cause 91.5 million casualties in hours
13
Black rain after Hiroshima contained 6.9 × 10^38 atoms of fission products per square meter
14
Cancer risk increases 5% per Gy of whole-body radiation exposure lifetime
15
Tsar Bomba's 50-megaton yield shockwave circled Earth three times
16
The U.S. conducted 215 atmospheric nuclear tests from 1945-1962
Interpretation
Destructive Effects Interpretation
The numbers paint a starkly efficient portrait of extinction: from the initial flash that melts city centers and crisps skin for miles, through the shockwave that flattens homes and the invisible poison that lingers for generations, to the final, grim accounting where a single modern warhead can erase hundreds of thousands of lives in an instant, and a full exchange could starve billions—all proving that humanity's most potent creation is a meticulously engineered machine for undoing itself.
03 · Category
Historical Development16 stats
01
The first nuclear test, code-named Trinity, was detonated by the United States on July 16, 1945, at the Alamogordo Bombing Range in New Mexico, with a yield of approximately 21 kilotons of TNT
02
The Manhattan Project, initiated in 1942, employed over 130,000 people at its peak and cost about $2 billion (equivalent to $23 billion in 2023 dollars) to develop the first atomic bombs
03
Little Boy, the uranium-based bomb dropped on Hiroshima on August 6, 1945, had a yield of 15 kilotons and was fueled by 64 kg of highly enriched uranium
04
Fat Man, the plutonium implosion bomb dropped on Nagasaki on August 9, 1945, yielded 21 kilotons and used 6.2 kg of plutonium-239
05
The Soviet Union detonated its first atomic bomb, RDS-1 (Joe-1), on August 29, 1949, at Semipalatinsk Test Site with a yield of 22 kilotons
06
The United Kingdom's first nuclear test, Operation Hurricane, occurred on October 3, 1952, at Monte Bello Islands with a yield of 25 kilotons
07
France conducted its first nuclear test, Gerboise Bleue, on February 13, 1960, in the Sahara Desert with a yield of 70 kilotons
08
China's first nuclear test on October 16, 1964, at Lop Nur yielded 22 kilotons using a uranium implosion design
09
India's first nuclear test, Smiling Buddha, was a peaceful nuclear explosion on May 18, 1974, with a yield of 12 kilotons
10
Pakistan's first nuclear tests, Chagai-I, on May 28, 1998, consisted of five devices totaling 40-45 kilotons
11
Israel's nuclear program began in the late 1950s with French assistance, achieving capability by 1966-67 with the Negev Nuclear Research Center
12
North Korea's first nuclear test on October 9, 2006, had a yield estimated at 0.7-2 kilotons
13
South Africa's first nuclear device test was a cold test in 1977, and it dismantled its six-gun-type bombs by 1991
14
The world's total nuclear warhead inventory peaked at around 70,300 in 1986 during the Cold War
15
The U.S. produced over 70,000 nuclear warheads from 1945 to 1991
16
The Soviet Union manufactured approximately 55,000 nuclear warheads by 1991
Interpretation
Historical Development Interpretation
Humanity spent a fortune and half a century in a grim race to replicate the destructive force of two dozen kilotons of TNT, only to end up with enough warheads to destroy civilization several times over.
More related reading
04 · Category
Nuclear Testing15 stats
01
Worldwide, 2,056 nuclear tests have been conducted since 1945, totaling over 440 megatons yield
02
The Soviet Union performed 715 nuclear tests at Semipalatinsk, exposing 1.5 million people to radiation
03
U.S. Nevada Test Site hosted 928 tests, 100 atmospheric, contaminating 1,000+ km²
04
France exploded 210 nuclear devices in Algeria and French Polynesia from 1960-1996
05
China's 45 tests at Lop Nur from 1964-1996 totaled 22 megatons
06
The largest U.S. test, Castle Bravo, yielded 15 megatons on March 1, 1954, at Bikini Atoll
07
India's five tests in 1998 at Pokhran totaled 40-45 kilotons yield
08
Pakistan's six tests in May 1998 at Chagai Hills yielded about 40 kilotons combined
09
North Korea has conducted six nuclear tests since 2006, latest in 2017 estimated at 140-250 kilotons
10
The Partial Test Ban Treaty of 1963 banned atmospheric, underwater, and space tests, signed by 113 states
11
Total underground tests worldwide: 1,528 from 1957-1992
12
Soviet Tsar Bomba test on October 30, 1961, was 50 megatons, 3,333 times Hiroshima
13
U.S. Operation Dominic in 1962 conducted 36 atmospheric tests totaling 38.1 megatons
14
The Comprehensive Nuclear-Test-Ban Treaty (CTBT) opened for signature in 1996, with 187 signatories but not in force
15
CTBT has detected over 2,000 seismic events since 1996, verifying no nuclear tests by major powers
Interpretation
Nuclear Testing Interpretation
Our species, in a fit of mutually assured irrationality, has spent decades and megatons meticulously poisoning the very ground and air we need to survive, all while perfecting treaties to solemnly swear we've mostly stopped doing it.
05 · Category
Treaties and Non-Proliferation16 stats
01
The Nuclear Non-Proliferation Treaty (NPT) entered into force on March 5, 1970, with 191 states parties
02
New START Treaty between U.S. and Russia limits deployed strategic warheads to 1,550 each, expires 2026
03
The Intermediate-Range Nuclear Forces (INF) Treaty eliminated 2,692 missiles by 1991, terminated 2019
04
Treaty on the Prohibition of Nuclear Weapons (TPNW) adopted 2017, entered force 2021, 70 ratifications
05
NPT Review Conferences occur every 5 years; 2010 action plan has 64 points, many unimplemented
06
Iran Nuclear Deal (JCPOA) signed 2015, limited centrifuges to 5,060 and uranium to 3.67% enrichment
07
IAEA safeguards 2.3 million significant quantities of nuclear material in 180 states as of 2023
08
Fissile Material Cut-off Treaty negotiations stalled; global HEU stockpile 1,240 tonnes
09
U.S.-India Civil Nuclear Agreement 2008 waived NSG rules for India
10
ABM Treaty 1972 limited anti-ballistic missiles; U.S. withdrew 2002
11
Open Skies Treaty allowed observation flights; U.S. withdrew 2020, Russia 2021
12
Nuclear Suppliers Group (NSG) has 48 members controlling nuclear exports since 1974
13
Australia's ratification of CTBT on March 9, 2023, brought total ratifications to 177
14
UN Security Council Resolution 1540 (2004) requires states to prevent non-state nuclear acquisition
15
Global highly enriched uranium stockpile is 1,240 metric tons, enough for 25,000 warheads
16
Plutonium stockpile worldwide: 535 tonnes military, 278 tonnes civilian as of 2023
Interpretation
Treaties and Non-Proliferation Interpretation
We've built a bewildering array of treaties, action plans, and safeguards—enough to fill a library—yet the world still holds enough explosive material to end civilization several times over, suggesting we’re better at crafting paperwork than we are at mustering the will to finish the job.
Reference
Cite This Report
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APA
Lukas Bauer. (2026, February 13). Nuclear Weapons Statistics. Gitnux. https://gitnux.org/nuclear-weapons-statistics
MLA
Lukas Bauer. "Nuclear Weapons Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/nuclear-weapons-statistics.
Chicago
Lukas Bauer. 2026. "Nuclear Weapons Statistics." Gitnux. https://gitnux.org/nuclear-weapons-statistics.
Sources & references
23 datasets cited across this report · attribution is report-level