Japan
Japanese calendar and daily-life tools: wareki ⇄ Gregorian, age reckoning, rokuyo, zodiac, yakudoshi, public holidays and genkoyoshi counting. The rokuyo tool computes the old lunisolar calendar properly rather than using a lookup table.
Wareki ConverterConvert Gregorian years to Japanese era years (Meiji, Taishō, Shōwa, Heisei, Reiwa) and back, with era-change boundary years handled correctly.Japanese Age CalculatorEnter a birth date or year to get the current age, traditional kazoe-doshi age, Japanese era birth year and zodiac animal, plus a 100-year age reference table.Rokuyō CalendarCheck the rokuyō (Taian, Tomobiki, Butsumetsu…) for any date with a month calendar view — the traditional lucky-day cycle used for Japanese weddings and ceremonies.Eto Zodiac CalculatorFind the Japanese zodiac animal (jūnishi) and full sexagenary eto (like 丙午 hinoe-uma) for any year, plus every recent year that shares the same animal.Yakudoshi CalculatorEnter your birth year to see your Japanese yakudoshi (unlucky) years by kazoe-doshi age — maeyaku, honyaku and atoyaku for men and women — and whether this year is one of them.Japan Public HolidaysFull list of Japanese national holidays for any year 2020–2030, computed by the official rules (Happy Monday, equinoxes, substitute holidays) with a next-holiday countdown.Genkōyōshi CounterPaste Japanese text to count characters and convert them into 400- or 200-square genkōyōshi manuscript pages, with a line-aware estimate that counts line breaks like real manuscript paper.