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
QHow 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.
QAnd 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.
QWhere 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.
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Traditional units (geun, doe, majigi and so on) vary by region and product.