Izuku Midoriya age, better known as Deku, is 16 years old during most of the later My Hero Academia storyline, including the Paranormal Liberation War and the Final War. He begins the story as a young teenager and eventually reaches adulthood in the series’ epilogue. Eight years after the Final War, the story shows an adult Izuku working as a teacher at U.A. High School. Contemporary coverage of the completed manga identifies this version of Izuku as 25 years old.

Izuku’s age can be confusing because My Hero Academia covers more than a single school year, while several major events happen around his birthday. He is also one of the youngest major characters when he first enters U.A. High School, making his physical and emotional development an important part of the story.

Here is a straightforward breakdown of Deku’s age throughout the series, including his childhood, U.A. entrance exam, major arcs, final battle, and adult life.

Table of Contents

How Old Is Deku?

Deku is 16 years old during the Final War and reaches 25 in the eight-year epilogue. Earlier in the story, he is 14 when the opening events begin and turns 15 during his first year at U.A.

His birthday is October 15, so his age changes depending on where an event falls within the My Hero Academia timeline.

Izuku Midoriya’s basic profile

Character detail	Information
Full name	Izuku Midoriya
Hero name	Deku
Birthday	October 15
Initial age	14
U.A. first-year age	15
Later U.A. age	16–17
Adult epilogue age	25
School	U.A. High School
Class	Class 1-A
Quirk	One For All
Original status	Quirkless
Role	My Hero Academia protagonist

Izuku’s journey begins when he is still a middle-school student who dreams of becoming a Pro Hero despite being born without a Quirk. His life changes after meeting All Might, who recognizes his heroic potential and eventually passes One For All to him. VIZ’s official description similarly identifies Midoriya as a boy who inherits the superpower of the world’s greatest hero.

When Is Deku’s Birthday?

Izuku Midoriya’s birthday is October 15.

His birthday is particularly useful when working out his age because the main story spans multiple seasons and more than one academic year.

Because the series begins before October, young Deku is 14 at the beginning of the story. He subsequently reaches 15 after his birthday. Later, as the school year progresses and the story moves into its second year of major conflicts, he reaches 16.

This is why sources sometimes describe Deku as either 14, 15, or 16, depending on the specific point in the story being discussed.

Izuku Midoriya’s Age Before U.A.

How old was Deku at the start?

Deku is 14 years old when the story initially begins.

At this stage, Izuku is still a middle-school student living with his mother, Inko Midoriya. He has already spent years studying professional heroes and writing detailed notes about their Quirks, techniques, strengths, and weaknesses.

The major obstacle is that Izuku was born without a Quirk in a society where supernatural abilities are extremely common.

Despite that disadvantage, he continues to dream about becoming a hero.

His childhood therefore establishes an important contrast for the rest of the series: the timid, Quirkless child eventually becomes the inheritor of One For All and one of the central figures in the fight against All For One and Tomura Shigaraki.

Deku’s Age Timeline Throughout My Hero Academia

The easiest way to understand the Deku age timeline is to follow his development from middle school through U.A. and into the final time skip.

Story period	Deku’s approximate age
Early childhood	4–13
Beginning of the story	14
U.A. entrance period	14–15
First-year U.A. period	15
Sports Festival	15
Forest Training Camp	15
Provisional License period	15
Work-study / Shie Hassaikai period	15
Joint Training / later first-year events	16
Paranormal Liberation War	16
Dark Hero period	16
Final War	16–17
U.A. graduation	Around 17
Eight-year epilogue	25

The exact age can vary slightly depending on whether someone is referring to the manga chronology, anime adaptation, or a particular event within a season. The broad progression, however, is consistent: Deku starts as a young teenager, reaches 16 during the major war storyline, and is shown as a 25-year-old adult in the final time skip.

How Old Is Deku in Season 1?

Deku is 14 when Season 1 begins and turns 15 during the broader first-year storyline.

Season 1 covers Izuku’s transformation from a Quirkless middle-school student into a U.A. student training to become a professional hero.

One of the earliest major milestones is the U.A. entrance exam. Before becoming a student, Izuku receives One For All from All Might and undergoes intense physical preparation so that his body can handle the new Quirk.

He eventually joins Class 1-A alongside characters such as Katsuki Bakugo, Shoto Todoroki, Ochaco Uraraka, Tenya Iida, and others.

So if you’re asking “How old is Deku in Season 1?”, the simplest answer is 14–15, with the exact point in the timeline determining which age applies.

How Old Is Deku in Season 2?

Deku is about 15 years old during Season 2.

Season 2 continues his first year at U.A. and includes the U.A. Sports Festival, internships, and the confrontation involving Stain.

By this stage, Izuku has become considerably more capable with One For All. Rather than simply releasing enormous amounts of power and damaging his body, he begins learning how to control the Quirk more efficiently.

His development during this period is not just physical. Deku increasingly understands what it means to become a professional hero rather than simply copying All Might.

How Old Is Deku in Season 3?

Deku is still around 15 years old during Season 3.

The third season includes the Forest Training Camp, the Vanguard Action Squad’s attack, the Kamino incident, and the changing role of All Might.

These events mark a major turning point for Izuku.

All Might’s battle with All For One forces the younger generation to recognize that the previous era of hero society is ending. Deku consequently has to think more seriously about what it means to inherit One For All.

How Old Is Deku in Season 4?

Deku is approximately 15–16 years old in Season 4.

This part of the story focuses heavily on his work-study experience and the Shie Hassaikai conflict.

Deku’s relationship with Eri becomes particularly important, and he also gets the opportunity to work alongside professional heroes.

The season demonstrates how far Izuku has progressed since the beginning of the series. He is still a teenager, but he is already being placed in situations that demand the judgment and responsibility expected of a professional hero.

How Old Is Deku in Season 5?

Deku is around 16 years old during Season 5.

By this stage, the students of Class 1-A have accumulated substantial combat experience.

Season 5 explores the Joint Training Battle between Classes 1-A and 1-B and reveals more information about One For All. Izuku discovers that the Quirk contains abilities connected to previous users, dramatically expanding his potential.

His development is particularly important because One For All is no longer simply a super-strength ability. Deku must learn how to manage several powers while also understanding the history and responsibility attached to the Quirk.

How Old Is Deku in Season 6?

Deku is 16 years old during Season 6.

Season 6 features the Paranormal Liberation War, one of the most consequential events in the series.

This is also where Deku’s abilities and responsibilities escalate dramatically. His connection to One For All becomes increasingly important as he confronts Shigaraki and the forces supporting him.

Following the war, society becomes increasingly unstable, and Izuku takes a more independent approach to protecting others.

The story moves away from the relatively sheltered environment of U.A. and places Deku in much more dangerous situations.

How Old Is Deku in Season 7?

Deku remains around 16 years old during Season 7.

Season 7 continues the conflict that ultimately leads toward the Final War.

Deku is no longer simply a first-year student learning the basics of hero work. He has become an experienced fighter capable of combining the different abilities associated with One For All.

Season 7 therefore represents an important stage in the Deku age timeline: physically, he is still a teenager, but his responsibilities are increasingly those of an experienced hero.

The seventh season aired before the anime’s final season. The official announcement confirmed that the eighth season would serve as the adaptation’s conclusion.

How Old Is Deku in Season 8?

Deku is around 16–17 during the Final War portion of Season 8, with the story eventually moving into adulthood.

The eighth season, officially titled My Hero Academia FINAL SEASON, premiered in October 2025 and concluded the television adaptation in December 2025.

The Final War represents the culmination of Izuku’s journey with One For All.

At this point, Deku has gone from a Quirkless teenager who could only dream about becoming a hero to one of the central figures in the world’s fight against All For One and Shigaraki.

The finale then moves beyond his teenage years.

How Old Is Deku in the Final Arc?

Deku is approximately 16–17 years old during the Final War and is 25 in the later epilogue.

The Final War is effectively the conclusion of Izuku’s teenage hero journey.

After the battle, Deku eventually graduates from U.A. and his remaining connection to One For All fades. Eight years later, the story shows him as an adult working as a teacher at U.A.

This time jump is significant because it gives readers and viewers a look at Deku beyond his teenage years.

Instead of ending his story immediately after the war, My Hero Academia shows what Izuku’s life looks like as an adult.

How Old Is Adult Deku?

Adult Deku is 25 years old in the eight-year epilogue.

Eight years after the Final War, Izuku is no longer the same inexperienced teenager introduced at the beginning of the series.

He works as a teacher at U.A. High School, using his experience to guide a new generation of students.

The completed story also establishes that Izuku eventually gets another opportunity to operate as a hero through advanced support technology. The final volume of the manga contains the completed story, while the anime’s post-finale material likewise covers the world after the eight-year time jump.

This makes 25 the clearest answer to Deku’s current age within the completed story’s epilogue.

Why Does Deku’s Age Change So Quickly?

The answer is simple: My Hero Academia follows Izuku through multiple school years and then adds a major time skip.

His progression can be summarized like this:

Childhood: Izuku grows up fascinated by heroes.
Age 14: He begins the main story as a Quirkless middle-school student.
Age 15: He becomes a U.A. student and begins learning One For All.
Age 16: His responsibilities and powers expand dramatically.
Age 16–17: He participates in the Final War.
Age 17: He eventually graduates from U.A.
Age 25: The epilogue shows his adult life eight years after the war.

This timeline also explains why descriptions of Deku sometimes give different ages without necessarily contradicting one another.

Izuku Midoriya’s Name, Identity, and Hero Name

Izuku Midoriya is the character’s given name and family name, while Deku is the hero name he eventually embraces.

The nickname originally has a negative history because Bakugo uses “Deku” to belittle Izuku. However, Izuku eventually reclaims the name and turns it into his hero identity.

His character arc is closely connected to One For All, the transferable Quirk inherited from All Might.

At the start, Izuku is Quirkless. After meeting All Might, however, he is selected to inherit One For All and becomes its ninth user.

That transformation is central to the entire My Hero Academia story. VIZ’s official series description identifies Midoriya’s inheritance of the world’s greatest hero’s superpower as a defining part of his journey.

How Tall Is Izuku Midoriya?

Izuku Midoriya is 166 cm tall during his U.A. student years, or approximately 5 feet 5 inches.

His height is another detail that changes as he grows. Like his age, Izuku’s physical appearance develops throughout the story.

By the adult epilogue, he is visibly older and more mature, reflecting the eight-year time jump.

Is Deku an Adult by the End of My Hero Academia?

Yes.

Deku is a teenager for the overwhelming majority of the main story, but the epilogue explicitly jumps forward eight years.

By that point, Izuku is an adult and has become a teacher at U.A. The anime’s final episodes also depict the post-war world and the lives of the former Class 1-A students after graduation.

This means there are effectively two different answers to “How old is Deku?” depending on which part of the story you mean:

Main teenage storyline: approximately 14–17
Adult epilogue: 25

Final Answer: Izuku Midoriya Age Explained

So, how old is Izuku Midoriya?

Deku begins My Hero Academia at 14 years old, becomes a U.A. student and turns 15, reaches 16 during the later major conflicts, and is around 16–17 during the Final War. After graduating from U.A., the story jumps forward eight years and shows Izuku at 25 years old, working as a U.A. teacher and eventually returning to hero activity with advanced technology.

His birthday is October 15, and his age progression mirrors one of the series’ central themes: Izuku does not become a hero overnight. His abilities, confidence, relationships, and understanding of heroism develop alongside him as he grows from a Quirkless middle-schooler into an adult who can pass his experience on to the next generation.

source: otakumode.com
source: gamerant.com

Custom FAQ

How tall is Izuku Midoriya?

Izuku Midoriya is 166 cm (about 5 feet 5 inches) during his U.A. student years. He becomes taller as he grows into adulthood.

What is Izuku Midoriya’s birthday year?

The series establishes Izuku’s birthday as October 15, but the story does not present a straightforward real-world calendar year for his birth. His birthday is more useful for determining his age relative to the events of the story.

How old is Izuku Midoriya in Season 1?

Deku is 14 at the beginning of the story and reaches 15 during the early U.A. period. This is why his Season 1 age is commonly described as 14–15.

How old is Deku in Season 7?

Deku is approximately 16 years old during Season 7. The season continues the story leading into the Final War.

What is Izuku Midoriya’s birthday?