Nuke Blast Simulator
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Nuclear Bomb Size Comparison

Nuclear bombs side by side. Five featured head-to-head comparisons — with blast and thermal radii for an air burst — plus every weapon in the database ranked by yield.

Featured comparisons

Tsar BombavsCastle Bravo
50 Mt (USSR) vs 15 Mt (USA)
Tsar BombavsLittle Boy
50 Mt (USSR) vs 15 kt (USA)
Little BoyvsFat Man
15 kt (USA) vs 21 kt (USA)
B83vsTsar Bomba
1.2 Mt (USA) vs 50 Mt (USSR)
Little BoyvsMOAB (Mother of All Bombs)
15 kt (USA) vs 11 t TNT (USA)

Every weapon by yield

All 43 weapons and tests in the database, largest yield first. Open any weapon for its profile, sources and — for nuclear weapons — its blast radii. Conventional entries show their explosive fill or TNT equivalent, not a nuclear yield.

WeaponYield / fillCountryYear
Tsar Bomba50 Mt[1]USSR1961
B4125 Mt[2]USA1960
Soviet Test 21924.2 Mt[1]USSR1962
Castle Bravo15 Mt[3]USA1954
Castle Yankee13.5 Mt[3]USA1954
Ivy Mike10.4 Mt[3, 4]USA1952
Hardtack Poplar9.3 Mt[5]USA1958
B539 Mt[2]USA1962
Test No. 63.3 Mt[6]China1967
Canopus2.6 Mt[7]France1968
B831.2 Mt[8, 2]USA1983
Orange Herald720 kt[9]UK1957
W88455 kt[8, 2]USA1988
B61340 kt[2, 10]USA1968
W87300 kt[2]USA1986
North Korea 2017 Test250 kt[11, 12]North Korea2017
W80150 kt[2]USA1981
W7690 kt[8, 2]USA1978
Gerboise Bleue70 kt[13]France1960
Chagai-I40 kt (claimed; ~9 kt seismic)[14]Pakistan1998
Trinity25 kt[15]USA1945
Hurricane25 kt[16]UK1952
Joe-122 kt[1, 17]USSR1949
Test No. 59622 kt[6]China1964
Fat Man21 kt[3]USA1945
Little Boy15 kt[3]USA1945
Smiling Buddha12 kt[18]India1974
Halifax Explosion (1917)2.9 kt[19]Canada1917
W54 SADM1 kt[2]USA1964
FOAB (Father of All Bombs)44 t TNT[20]Russia2007
Davy Crockett0.02 kt[2]USA1961
MOAB (Mother of All Bombs)11 t TNT[21]USA2003
Grand Slam6.6 t TNT[22]UK1945
BLU-825.7 t fill[23]USA1970
FAB-50003.2 t fill[24]USSR1943
Tallboy2.4 t fill[25]UK1944
GBU-57 MOP2.4 t fill[26]USA2007
Blockbuster (HC 4000)1.4 t fill[27]UK1941
Mark 840.43 t fill[28]USA—
JDAM (GBU-31)0.43 t fill[29, 28]USA1997
GBU-28 Bunker Buster0.3 t fill[30]USA1991
FAB-5000.2 t fill[31]USSR/Russia1954
Mark 820.09 t fill[32]USA—

Sources

  1. 1.Source: Nuclear Weapon Archive (Carey Sublette), Soviet Atmospheric Tests (last updated 7 Oct 1997) — retrieved Oct 2026
  2. 2.Source: Nuclear Weapon Archive (Carey Sublette), Complete List of All U.S. Nuclear Weapons (last changed 30 Mar 2023) — retrieved Oct 2026
  3. 3.Source: US DOE / NNSA Nevada Field Office, United States Nuclear Tests, July 1945 through September 1992 (DOE/NV-209 Rev. 16, Sep 2015), NNSS publication library — retrieved Oct 2026
  4. 4.Source: Atomic Archive, "Mike" Device is Tested — retrieved Oct 2026
  5. 5.Source: US DOE Nevada Operations Office, United States Nuclear Tests, July 1945 through September 1992 (DOE/NV-209 Rev. 15, Dec 2000; DTIC ADA385771 copy) — retrieved Oct 2026
  6. 6.Source: Nuclear Weapon Archive (Carey Sublette), China's Nuclear Weapons (last changed 1 May 2001) — retrieved Oct 2026
  7. 7.Source: Wikipedia, List of nuclear weapons tests — retrieved Oct 2026
  8. 8.Source: Bulletin of the Atomic Scientists / FAS (Kristensen, Korda, Johns, Knight-Boyle), United States nuclear weapons, 2026 (Nuclear Notebook, 12 Mar 2026) — retrieved Oct 2026
  9. 9.Source: Wikipedia, Operation Grapple — retrieved Oct 2026
  10. 10.Source: US DOE / NNSA, B61-12 Life Extension Program fact sheet (Apr 2023) — retrieved Oct 2026
  11. 11.Source: NORSAR, Summing up the nuclear test in North Korea on 3 September 2017 (22 Sep 2017) — retrieved Oct 2026
  12. 12.Source: United Nations (USG Jeffrey Feltman; copy hosted by CTBTO), Remarks to the Security Council on the DPRK nuclear test (4 Sep 2017) — retrieved Oct 2026
  13. 13.Source: Wikipedia, Gerboise Bleue (nuclear test) — retrieved Oct 2026
  14. 14.Source: Nuclear Weapon Archive (Carey Sublette), Pakistan's Nuclear Weapons Program - 1998: The Year of Testing — retrieved Oct 2026
  15. 15.Source: Los Alamos National Laboratory (1663 magazine), Revising Trinity — retrieved Oct 2026
  16. 16.Source: Atomic Archive, Britain Goes Nuclear — retrieved Oct 2026
  17. 17.Source: Atomic Archive, The Soviet Atomic Bomb — retrieved Oct 2026
  18. 18.Source: FFI - Norwegian Defence Research Establishment (H. K. Toft), De kjernefysiske provesprengningene i India og Pakistan (1974 og 1998), FFI/RAPPORT-2003/00459 — retrieved Oct 2026
  19. 19.Source: NATO Munitions Safety Information Analysis Center (MSIAC), Accident poster 07: Halifax, Nova Scotia, 6 Dec 1917 — retrieved Oct 2026
  20. 20.Source: Wikipedia, Father of All Bombs — retrieved Oct 2026
  21. 21.Source: Wikipedia, GBU-43/B MOAB — retrieved Oct 2026
  22. 22.Source: Wikipedia, Grand Slam (bomb) — retrieved Oct 2026
  23. 23.Source: National Museum of the US Air Force, Bomb Live Unit (BLU-82/B) fact sheet — retrieved Oct 2026
  24. 24.Source: Wikipedia, FAB-5000 — retrieved Oct 2026
  25. 25.Source: Wikipedia, Tallboy (bomb) — retrieved Oct 2026
  26. 26.Source: Wikipedia, GBU-57A/B MOP — retrieved Oct 2026
  27. 27.Source: Wikipedia, Blockbuster bomb — retrieved Oct 2026
  28. 28.Source: Wikipedia, Mark 84 bomb — retrieved Oct 2026
  29. 29.Source: US Air Force, Joint Direct Attack Munition GBU-31/32/38 fact sheet — retrieved Oct 2026
  30. 30.Source: Wikipedia, GBU-28 — retrieved Oct 2026
  31. 31.Source: Wikipedia, Soviet and Russian aerial bombs — retrieved Oct 2026
  32. 32.Source: Wikipedia, Mark 82 bomb — retrieved Oct 2026
See also: full Weapons Database · blast radius calculator · cities · methodology.