Japanese School Grade Calculator — grade, hayaumare & entrance/graduation years
Enter a birth date to get the Japanese school grade on any date, whether the child is hayaumare (born 1 Jan – 1 Apr), classmates' birth range, kindergarten-to-university entrance and graduation years, and a grade table for any school year.
🔒 Runs entirely in your browser. Your input and output are never sent to a server or stored — fully private.
Milestones
Grade table for school year
Japanese grades are fixed by the school year, not the calendar year: everyone born from 2 April of one year to 1 April of the next is in the same grade. A child born on 1 April is the youngest of the older grade, because the law treats a birthday as reached at the end of the previous day. University years assume entry straight after high school.
About this tool
This Japanese school grade calculator answers the questions the April-start school year makes confusing. Enter a date of birth and it tells you which grade the child is in on any date you choose, whether they are hayaumare (born 1 January to 1 April, and so placed with the previous year's births), and the birth-date range of their classmates. It lists every milestone from kindergarten entry through elementary, junior high and high school to university graduation, plus legal adulthood and the coming-of-age ceremony, each with the Japanese era year. A second table shows, for any school year, which birth dates belong to each grade from nursery to university. Everything runs in your browser.
Frequently asked questions
What does hayaumare mean, and why is a 1 April birthday in the older grade?
Hayaumare means born between 1 January and 1 April; those children start school with the previous calendar year's births and are the youngest in their grade. The 1 April edge comes from two laws: the 1902 Act on Age Calculation says a person reaches a new age at the end of the day before their birthday, and the School Education Act enrols a child from the first school year that begins after the day they turn six. A child born on 1 April turns six at the end of 31 March, so the school year starting the next day is theirs.
How do I work out the year a child starts elementary school?
Born 2 April to 31 December of year Y: elementary school starts in April of Y + 7. Born 1 January to 1 April of year Y: April of Y + 6. So a child born on 10 May 2019 starts in April 2026, and so does a child born on 15 March 2020, while one born on 2 April 2020 starts in April 2027. Junior high follows six years later, high school three years after that, and graduation is in March, at the end of the school year.
How are nursery and kindergarten classes (nensho, nenchu, nencho) decided?
By the child's age on 1 April of the school year, not by their current age. A child who is 3 on 1 April is in the age-3 class all year — nensho at kindergarten — even after turning 4. Nenchu is the age-4 class and nencho, the last year before elementary school, the age-5 class. Nursery schools use the same rule for the age-0, 1 and 2 classes, which is why a baby born in spring can be in the age-0 class while one born the following February joins it a year later.
When is the coming-of-age ceremony now that adulthood is 18?
Since April 2022 legal adulthood in Japan starts at 18, but most municipalities still hold the ceremony for 20-year-olds, often renamed hatachi no tsudoi, on or around Coming of Age Day in January. They invite by school year, not calendar year: everyone in the grade that turns 20 between 2 April and 1 April is invited the same January. In this tool that is January of the cohort year + 21; check your city's announcement, as dates and naming vary.
Can a child skip or repeat a grade in Japan?
In compulsory education, practically no. Public elementary and junior high schools place children strictly by age, with no grade skipping, and holding a child back is legally possible but extremely rare — even long absences usually do not change the grade. Returnee and foreign children are normally placed by age as well, sometimes one year lower after consultation. High school and university are different: students can repeat a year, and a small number of universities accept exceptionally able students one year early at 17 (tobi-nyugaku). The tool assumes the standard age-based path.