There are many fun facts involving the number 100 in the world. Some involve anniversaries, animals, and more. However, how many fun facts involving 100 can you name on your own. For all of you interested in random trivia involving the number 100 that you may never see again after reading this article, studying for Jeopardy (or some other random game show where they could ask you a question about the number 100), or you just want to learn more fun facts with the number 100 than these are some the best  fun facts involving the number 100 for you.

Time/Years/Age Fun Facts

1. 100 days is equal to roughly 3.29 months.
2. There is roughly 1.67 minutes in 100 seconds.
3. 100 months is roughly 8.33 years.
4. 100 milliseconds is approximately 0.1 seconds.
5. There is roughly 4.17 days in 100 hours.
6. One hundred years is called a century.
7. A one hundred year old is called a centenarian.
8. According to the United States Census Bureau 78.8% of people over 100 years old in the U.S. in 2020 were female.
9. Japan has the most people who live to 100 years old in the world.
10. In Korean culture the celebration of a 100 day anniversary of the life of a newborn baby is called Baek-il.

Distances Fun Facts

11. 100 feet is roughly 30.48 meters.
12. 100 meters is approximately 328.08 feet.
13. There is approximately 160.93 kilometers in 100 miles.
14. There is roughly 62.14 miles in 100 kilometers.
15. The standard American football field is 100 yards long between the goal lines.
16. A Ramsden’s/Engineer’s chain is a chain made of 100 links, each a foot long.
17. A cube with roughly 4.08 feet sides will have a surface area of 100 feet.
18. There is exactly 100 meters in 1 hectometer.
19. There is 100 centimeters in a meter.
20. Delaware is roughly 100 miles from north to south.

Animals Fun Facts

21. Certain whale species and orcas are the only mammals other than humans that can live up to 100 years or more.
22. The Painted Lady Butterfly can fly up to 100 miles a day during migration.
23. The blue whale can grow up to around 100 feet long.
24. Manatees eat around 100 or more pounds of food each day.
25. The Alaskan sea otter can way up to 100 pounds.
26. The name centipede means 100 legs, but as of the time this article was written there is no known species of centipedes to have exactly 100 legs.
27. Firebrats, a close relative to silverfish, can lay up to 100 eggs in their life (1.5-2 years).
28. The average cat can make around 100 vocal sounds.
29. The average body temperature of a dog is a little over 100ºF.
30. The big blue octopus (or day octopus) can change its color over 100 times an hour.

100th Anniversaries in 2026 Fun Facts

31. Winnie the Pooh will celebrate his 100th birthday on October 14, 2026.
32. The first liquid-fueled rocket (created by Dr. Robert Goddard) launch will celebrate its 100th anniversary on March 16, 2026.
33. Harry Houdini will have been dead for 100 years on October 31, 2026.
34. U.S. route 66 (a highway stretching from Missouri to Arizona) will celebrate its 100th anniversary on April 30, 2026.
35. The first televised weather map was have aired a 100 years ago on August 18, 2026.
36. The Great Miami Hurricane of 2026 will have its 100th anniversary on September 18, 2026.
37. NBC will celebrate its 100th anniversary in 2026.
38. The 100th anniversary of Babe Ruth’s three home run game in the World Series will be on October 6, 2026.
39. The Schrödinger equation celebrated its 100th anniversary during the month of January in 2026.
40. The first verified flight to the north pole will have its 100th celebration on May 12, 2026.

Books/Authors Fun Facts

41. In the series Wings of Fire around 100 Icewings were killed in total in the diamond trials.
42. In the book Scythe there are over 100 factions in the religion of Tonism.
43. In the series Harry Potter Albus Dumbledore is over 100 years old when he dies.
44. Stephan King wrote an introduction for the 100th anniversary of William Golding’s birth edition of Lord of the Flies.
45. William Shakespeare wrote over 100 sonnets in his life.
46. Calvin Tompkins (a writer for the New Yorker Magazine) celebrated his 100th birthday on December 17, 2025.
47. The author James Patterson has co-authored in more than 100 books.
48. In the Percy Jackson and the Olympians series a Hundred Handed One (a monster with 100 hands) is introduced in the Battle of the Labyrinth book.
49. To Kill a Mockingbird has been in the top 100 most banned/challenged books since 2000.
50. In Chinua Achebe’s book Things Fall Apart Okonkwo has to pay 100 cowries as part of his punishment for beating one of his wives during the Week of Peace.

Chemistry Fun Facts

51. The element ruthenium (Ru) has an average atomic mass of around 100.
52. The element fermium (Fm) has 100 protons.
53. The element americanium (Am) will celebrate its 100th anniversary of its discovery in the year 2044.
54. The isotope Fm257 has a half life of roughly 100 days.
55. 100 grams of octane can produce roughly 4800 kJ during combustion if it has unlimited access to O2.
56. Just a little less than 100 elements are naturally occurring.
57. The 100th anniversary of the plum pudding model (a model of an atom that has a “blob” that is positively charged with little negatively charged electrons inside of it. This model was later disproven to be what an atom looks like) was in 2004.
58. The 100th anniversary of the publication of the Gold Foil Experiment (the experiment that determined that atoms have a small, dense, positively charged nucleus and is mostly empty space) was in May 2011.
59. The 100th anniversary of the Bohr Model (a model of an atom where the electrons orbits the nucleus in energy shells that looks almost like a replica of a solar system) was in 2013.
60. The 100th electron in an atom falls into the 5th electron shell(or the 5f sub shell to be specific).

100 AD Fun Facts

61. In 100 AD Rome had roughly 300,000 to 400,000 soldiers.
62. Emperor Trajan was emperor of Rome in 100 AD.
63. Emperor Liu Zhao (He of Han) was emperor of the Eastern Han Dynasty in China in 100 AD.
64. Emperor Sujin was emperor of Japan in 100 AD.
65. The Terminal Preclassic period in Mayan history began around 100 AD.
66. The Kingdom of Aksum (in modern day Ethiopia and Eritrea) began its rise to power in 100 AD.
67. Vima Kadphises was emperor of the Kushan Empire in the northern area of India in 100 AD.
68. The Moche civilization was beginning to both form and flourish in 100 AD in South America.
69. Teotihuacan became an important urban city in 100 AD in modern Mexico.
70. Around 100 AD Hopewell culture began to grow rapidly in North America.

Language Fun Facts

71. 100 in Spanish is cien.
72. 100 in French is cent.
73. Einhundert is German for 100.
74. Hunderd in Dutch is 100.
75. 100 in Chinese is 一百.
76. 100 in Korean is 백.
77. Cem is 100 in Portuguese.
78. Šimtas is 100 in Lithuanian.
79. Száz is Hungarian for 100.
80. Un cant is Welsh for 100.

Guinness World Records Fun Facts

81. The fastest time to pop 100 balloons by a dog was 39.08 seconds.
82. The most golf balls hit over 100 yards in three minutes was set by Lynn Ray with 102 golf balls going over 100 yards each.
83. The most sibling to reach over 100 years old was six (set by the Clarke family in Ireland).
84. The fastest time to mentally add 100 four digit numbers was 30.90 seconds and was set by Aaryan Shukla.
85. The largest online 100 Metre sprint (held on Xbox LIVE) had 10,539 participants.
86. The longest marathon playing piano individually was over 100 hours long and set by Thurzó Zoltán.
87. The fastest 100m on all fours was 14.55 seconds and set by Ryusei Yonee.
88. The fastest time to count from 1 to 100 was 29.19 seconds and set by Nandita.
89. The fastest time to eat 100 Carolina Reaper chili peppers was 36 minutes and 38.81 seconds and set by Mike Jake.
90. Ashrita Furman was the first person to hold 100 world records concurrently in 2009.

100s in This Article Fun Facts

91. Fun fact number 60 has exactly 100 characters (including spaces).
92. It took roughly 100 minutes to finish the “100th Anniversaries in 2026 Fun Facts” section.
93. The intro has exactly 100 words.
94. The “Distance Fun Facts” section has exactly 100 words.
95. The 100th character of the intro is a comma.
96. The 100th character of the “Books/Authors Fun Facts” is an “o”.
97. The 100th word in the “Animals Fun Facts” section is “silverfish”.
98. The 100th word in the “Chemistry Fun Facts” section is “electrons”.
99. The “100s in This Article Fun Facts” is exactly 100 words long.
100. This is the 100th fact.