Age Chart by Birth Year

How does an age chart (nenrei hayamihyou) work?

An age chart lists, for every birth year, the age a person turns this year, their Japanese era (wareki) birth year, and their zodiac animal — a quick lookup instead of doing the subtraction yourself. Because a birthday may or may not have happened yet this year, most charts show two ages: one for before the birthday and one for on/after it.

This table is generated from today's date in your browser, covering birth years from this year back 120 years, so it always reflects the current year rather than a fixed snapshot.

How do I find my age from my birth year?

Subtract your birth year from the current year to get the age you turn this year (your age after this year's birthday); subtract one more for your age before this year's birthday. Example: born in 2000, in 2026 you turn 26 (2026 - 2000) after your birthday, or you are still 25 before it.

How this age chart is built

1. Take today's date from your device and read the current calendar year.
2. List every birth year from the current year down to 120 years earlier, one row per year.
3. For each birth year, compute two ages: current year minus birth year (on/after this year's birthday), and one less than that (before this year's birthday).
4. Look up the Japanese era (wareki) name and year for January 1 of that birth year; for the four transition years (1912, 1926, 1989, 2019) show both applicable eras.
5. Compute the 12-animal zodiac sign from the birth year using its remainder when divided by 12.

Age and zodiac formulas

• "After birthday" age assumes this year's birthday has already passed
• "Before birthday" age assumes this year's birthday has not happened yet
• Zodiac cycles every 12 years: remainder 4 = Rat, 5 = Ox, 6 = Tiger, 7 = Rabbit, 8 = Dragon, 9 = Snake, 10 = Horse, 11 = Goat, 0 = Monkey, 1 = Rooster, 2 = Dog, 3 = Pig

Quick age chart answers

What zodiac animal is 2026?

The Horse — 2026 mod 12 = 10, which maps to Horse in this calculator's cycle.

What age is 환갑 (hwangap, the 60th birthday)?

Age 60 — traditionally the year someone completes a full 60-year sexagenary cycle and starts it again, celebrated as a milestone birthday in Korea.

What zodiac animal was 2000?

The Dragon — 2000 mod 12 = 8, which maps to Dragon.

How does the table show age from just a birth year?

It computes two values from birth year alone — current year minus birth year (the age after this year's birthday) and one less than that (the age before it) — since a birth year alone can't say whether this year's birthday has already passed.

What Japanese era (wareki) year was 2000?

Heisei 12 — the 12th year of the Heisei era, which ran from 1989 to 2019.

How many zodiac animals are there and what order do they cycle in?

Twelve, in a fixed repeating order: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig.

How do I find my own zodiac animal from my birth year?

Divide your birth year by 12 and take the remainder, then match it to the cycle position (for example, remainder 10 is Horse, remainder 8 is Dragon) — this calculator's table computes it automatically for 121 birth years.

Is 환갑 (age 60) calculated the same way as every other age in this table?

Yes — this table uses international (만) age, the same way it calculates every other age, so 환갑 simply refers to the birth year that gives an age of 60 this year.

Example rows (as of 2026)

Frequently asked questions

Why does this chart show two ages instead of one?

Your age changes on your birthday, and a birth year alone doesn't say whether this year's birthday has happened yet. Showing both the "before" and "on/after" age covers both cases without needing your exact birth date.

What does it mean when a birth year shows two era names?

Four birth years in this range (1912, 1926, 1989, 2019) contain an actual era change partway through the year, so someone born in the first part of that year has a different wareki year than someone born after the transition date.

How is the zodiac animal determined from a birth year?

The 12-animal cycle repeats every 12 years in a fixed order (Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig). Taking the birth year modulo 12 gives a consistent position in that cycle, matching the traditional assignment.

Does this table use 満年齢 (kazoedoshi) or the East Asian counting age?

This table uses 満年齢 (man-nenrei), the standard international "full age" that increases by one on each birthday — the age used on official Japanese documents today, not the older East Asian counting-age system that adds a year at New Year's.

Ages are calculated from the current date in your browser and the calendar year only, not the exact birth date, so the "before/after birthday" columns are estimates until you know the specific day; the table covers 121 birth years (this year back 120 years).

Privacy and safety

• Runs in your browser — Everything you type is calculated on your own device. Your inputs are never sent to a utilduck server.
• Encrypted connection — Pages are served over HTTPS, so nobody on the network can read what you load.
• Not shared with third parties — Your inputs are not passed to analytics or advertising services.
• Nothing is stored — Results are not saved to any server, and there is no account to create.

Last updated: 2026-08-17