Japanese Unit Converter

📐 Japanese Unit Converter - shaku, tsubo, sho and kan in metric units

Tsubo in a Tokyo apartment listing. Shaku and sun on an old house plan.
Go and sho for rice and sake. Monme for pearls.
Traditional Japanese units still turn up in everyday life.
Type a number and see it in metric right away.

This app shows no ads.

【4 categories, 39 units】
📏 Length … bu, sun, shaku, ken, jo, cho, ri / mm, cm, m, km
🗾 Area … go, tsubo, se, tan, chobu, 4 tatami sizes / m², a, ha
🍶 Volume … shaku, go, sho, to, koku / mL, L, m³
⚖️ Mass … fun, monme, ryo, kin, kan / g, kg, t

【Quick reference table】
Enter a value and every unit in the category is converted at once.
You see how many m² one tsubo is, and how many tatami mats, at the same time.

【Four tatami sizes】
Tatami mats differ in size by region. Kyoma, Chukyoma, Edoma and Danchima
are all included, so you can see how much a "6-mat room" really varies.

【Kanji shown with each unit】
Units are written in romaji, with the kanji and how they relate to the next unit:
shaku (尺 · 10/33 m), ken (間 · 6 shaku), tsubo (坪 · 400/121 m²).

【Simple to use】
1. Pick a category (length, area, volume, mass)
2. Type a number, then tap the unit you are converting from and the unit you want
3. The result appears right away

Tap "⇅ Swap" to reverse the direction in one step.

【Presets for common values】
1 ken, 6 shaku, 1 ri, 1 tsubo, 6 tatami, 1 tan, 1 sho, 1 go, 1 kan, 1 monme.
One tap fills in the value.

【History of the last 5 conversions】
Tap any entry to bring it back. History is stored only on your device and can
be cleared at any time.

【Notes on the units】
Why 1 shaku is exactly 10/33 of a meter, why a loaf of bread in Japan is not
the traditional kin, and more - short notes for each category.

【Good for】
• Reading tsubo and tatami in Japanese real estate listings as m²
• Old house plans and carpentry measured in shaku, sun and ken
• Sake and rice measured in go, sho and koku
• Pearls and antiques weighed in monme and kan
• Distances in ri and cho in Japanese history and period dramas

【Japanese and English】
The app follows your device language. Nothing to configure.

【No account needed】
The conversion runs on your device, and the figures you type are never sent anywhere.

【Privacy Policy】
https://cof745.github.io/shakkanhonoads-privacy/

【Contact】
[email protected]