Ja (자/尺) to cm
Convert the Korean ja (chi/shaku family) to centimeters. Still used for fabric, traditional furniture and bedding sizes.
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Common values
Formula
cm = ja × 30.303
One ja is about 30.3 cm. The separate cloth-measuring ja used in Korean markets is about 55 cm, so ask which one is meant.
Frequently asked questions
Q. How many cm is 1 ja?
1 ja is 30.3 cm, and 10 ja is 303.03 cm. Type any value in the box above to convert instantly.
Q. And how many ja is 1 cm?
1 cm is 0.03 ja. This converter works both ways, so typing in the right box updates the left one.
Q. Where is this unit used?
One ja is about 30.3 cm. The separate cloth-measuring ja used in Korean markets is about 55 cm, so ask which one is meant.
Other converters
Traditional units (geun, doe, majigi and so on) vary by region and product.