Converted Value
9.16667e-6
Also available in our
Android app, with charts and full breakdown tables.
Rate this calculator
Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it:
★
★
★
★
★
⚡ Millimeters to Chō (Japan): the quick answer
1 mm = 9.16667 × 10⁻⁶ chō
1 millimeter equals 9.16667 × 10⁻⁶ chō (Japan)
To convert millimeters to chō (Japan), multiply the value by 9.16667 × 10⁻⁶.
To go the other way, multiply chō (Japan) by 109,091 to get millimeters.
↔ Convert chō (Japan) to millimeters instead
🧮 Formula
Every unit here is defined by its length in meters, so the conversion factor is (meters per millimeter) ÷ (meters per chō (Japan)).
📊 Millimeters to Chō (Japan) conversion table
✏️ Worked examples
Convert 25 millimeters to chō (Japan)
25 mm × 9.16667 × 10⁻⁶ = 0.000229167 chō
Try this example →
Convert 250 millimeters to chō (Japan)
250 mm × 9.16667 × 10⁻⁶ = 0.00229167 chō
Try this example →
📘 About these units
Millimeter (mm). A millimeter is one thousandth of a meter, used for small measurements such as thickness and rainfall.
Chō (Japan) (chō). The chō is 60 ken (109.09 m), a traditional Japanese unit of distance. Used in: Asia — Japan & Korea.
❓ Frequently asked questions
How many chō (Japan) are in one millimeter?
There are 9.16667 × 10⁻⁶ chō (Japan) in one millimeter.
How do I convert millimeters to chō (Japan)?
Multiply the number of millimeters by 9.16667 × 10⁻⁶. For example, 10 millimeters equal 9.16667 × 10⁻⁵ chō (Japan).
How many millimeters are in one chō (Japan)?
One chō (Japan) equals 109,091 millimeters.
🔗 More length conversions
All length units →
What people are saying
★★★★★
Anonymous · 02 Oct 2026
★★★★★
Anonymous · 01 Oct 2026
★★★★★
Anonymous · 28 Sep 2026