🌍 How Rare Are You in Japan?
🇯🇵 Genetic Landscape of Japan
Japan is one of the most genetically homogeneous major nations, with over 98% of the population sharing Yamato Japanese ancestry. Two ancient groups — Jōmon (indigenous hunter-gatherers) and Yayoi (rice farmers from mainland Asia) — merged to form modern Japanese. The Ainu people of Hokkaido carry distinct genetic markers including wavy hair and more body hair. Okinawans have their own unique genetic profile closer to ancient Jōmon. Blood type is culturally significant in Japan — "blood type personality" is widely discussed in media and dating. A+ blood type is most common, unlike the global O+ dominance.
👁️ Eye Color
| Dark Brown | 70% |
| Brown | 25% |
| Black | 4% |
| Other | 1% |
💇 Hair Color
| Black | 85% |
| Dark Brown | 12% |
| Brown | 2% |
| Other | 1% |
🩸 Blood Type
| A+ | 30% |
| O+ | 29% |
| B+ | 20% |
| AB+ | 10% |
| A- | 5% |
| O- | 3% |
| B- | 2% |
| AB- | 1% |
📏 Height in Japan: Men & Women
The average man in Japan stands 172 cm (5'8") — right around the world average of 171 cm. The average woman measures 158 cm (5'2"), right around the world average of 159 cm for women. Height follows a bell curve, so every centimeter away from the mean makes you measurably rarer.
| ♂ Men in Japan | Rarity |
|---|---|
| Average (172 cm / 5'8") | Top 50% |
| Tall (181+ cm / 5'11"+) | Top 10% |
| Very tall (186+ cm / 6'1"+) | Top 2% |
| ♀ Women in Japan | Rarity |
|---|---|
| Average (158 cm / 5'2") | Top 50% |
| Tall (166+ cm / 5'5"+) | Top 10% |
| Very tall (171+ cm / 5'7"+) | Top 2% |
Estimates assume a normal distribution with a standard deviation of ~7 cm for men and ~6.5 cm for women, consistent with NCD-RisC population studies.
🧬 What Trait Combinations Look Like in Japan
Rarity multiplies. Even common traits become uncommon once you stack them. Using the distributions above for Japan's population of 125M:
Dark Brown eyes + black hair + A+ blood = 70% × 85% × 30% ≈ 17.8% — ~22.3 million people in Japan (about 1 in 6).
Black eyes + brown hair + AB- blood ≈ 0.0008% — ~1,000 people in the whole country (about 1 in 125,000).
Add height, handedness (~10% of people are left-handed), and an MBTI type, and almost everyone lands below 1 in 10,000. That is the core idea behind the Avortas rarity calculator — try your own combination against Japan and the world.
⭐ Rare Facts About Japan
🔄 Rare vs Common in Japan
Rarity is local. A trait that turns heads worldwide can be ordinary here — and vice versa. Based on Japan's own distribution:
💎 Rarer in Japan than worldwide
Want the full picture? The rarity calculator compares your traits against both Japan and the whole world.
Frequently Asked Questions
What is the average height in Japan?
Men in Japan average about 172 cm (5'8") and women about 158 cm (5'2"). Anyone above 181 cm (men) or 166 cm (women) is in roughly the tallest 10% of the country.
How is rarity calculated in Japan?
Each trait's local frequency is multiplied together. Because Japan's distributions differ from world averages, the same person can score very differently here than globally.
Is my rarity in Japan different from my global rarity?
Usually, yes. Traits that are rare worldwide can be common locally — and the reverse. Run the global calculator and compare it with the numbers on this page.