[School year 2023] Date of birth and age of 1st grade in high school

Calculate date of birth and age from grade

Date of birth and age of 1st grade in high school as of School year 2023(Reiwa 5).
You can also check the age before and after the birthday, and the Sexagenary cycle.
In addition, you can easily check Grade list such as date of birth, grade, age, etc. for each year in the table.

School year starts on April 1st and ends on March 31st of the following year.
"School year 2023" is from April 1, 2023 to March 31, 2024.

School year 2023(Reiwa 5) - 1st grade in high school

School year 2023
(Reiwa 5)
April 2, 2023 – April 1, 2024
Grade 1st grade in high school
Date of birth April 2, 2007 – April 1, 2008
Age 15 years old – 16 years old
If your birthday has not yet come after April 2nd : 15 years old
If your birthday is after April 2nd : 16 years old
Sexagenary cycle
Born in 2007 : 亥(I 亥(I))
Born in 2008 : 子(Ne 子(Ne))

Grade list

DateGrade Age
April 2, 2007 – April 1, 2008 Birth
April 2, 2008 – April 1, 2009 0 – 1
April 2, 2009 – April 1, 2010 1 – 2
April 2, 2010 – April 1, 2011 2 – 3
April 2, 2011 – April 1, 2012 1st year of kindergarten 3 – 4
April 2, 2012 – April 1, 2013 2nd year of kindergarten 4 – 5
April 2, 2013 – April 1, 2014 3rd year of kindergarten 5 – 6
April 2, 2014 – April 1, 2015 1st grade in elementary school 6 – 7
April 2, 2015 – April 1, 2016 2nd grade in elementary school 7 – 8
April 2, 2016 – April 1, 2017 3rd grade in elementary school 8 – 9
April 2, 2017 – April 1, 2018 4th grade in elementary school 9 – 10
April 2, 2018 – April 1, 2019 5th grade in elementary school 10 – 11
April 2, 2019 – April 1, 2020 6th grade in elementary school 11 – 12
April 2, 2020 – April 1, 2021 1st grade in junior high school 12 – 13
April 2, 2021 – April 1, 2022 2nd grade in junior high school 13 – 14
April 2, 2022 – April 1, 2023 3rd grade in junior high school 14 – 15
April 2, 2023 – April 1, 2024 1st grade in high school 15 – 16
April 2, 2024 – April 1, 2025 2nd grade in high school 16 – 17
April 2, 2025 – April 1, 2026 3rd grade in high school 17 – 18
April 2, 2026 – April 1, 2027 1st year university student 18 – 19
April 2, 2027 – April 1, 2028 2nd year university student 19 – 20
April 2, 2028 – April 1, 2029 3rd year university student 20 – 21
April 2, 2029 – April 1, 2030 4th year university student 21 – 22
April 2, 2030 – April 1, 2031 1st year master's student 22 – 23
April 2, 2031 – April 1, 2032 2nd year master's student 23 – 24
April 2, 2032 – April 1, 2033 1st year Ph.D. student 24 – 25
April 2, 2033 – April 1, 2034 2nd year Ph.D. student 25 – 26
April 2, 2034 – April 1, 2035 3rd year Ph.D. student 26 – 27

*Primary school(6 years) / Junior high school(3 years) / High school(3 years) / Four-year university(4 years) / Master's course(2 years) / Doctoral course(3 years)

*Age does not take into account repeat grades or ronin.

Other years