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1 cun = 3.33 cm

Cun to cm converter

Convert Chinese cun (寸), one tenth of a chi, into centimeters, inches and feet. This uses the modern mainland value.

1 modern Chinese cun = 3.333 centimeters = 1.312 inches. Length Published 2026-05-15

Quick answer: 1 modern Chinese cun = 3.333 centimeters = 1.312 inches.

Length · cun ↔ cm 寸 · length
Resultcm basis

Uses the modern mainland China value. Regional or historical values may differ.

View formula
On this page Formula Chart Notes Related tools

01 /Cun to cm converter formula

1 modern Chinese cun = 3.333 centimeters = 1.312 inches.

12 cun = 40 cm = 15.75 inches.

02 /Common conversion chart

CunCunCentimetersInchesFeet
1 寸1 寸3.333 cm1.312 in0.1094 ft
3 寸3 寸10 cm3.937 in0.3281 ft
6 寸6 寸20 cm7.874 in0.6562 ft
10 寸10 寸33.333 cm13.123 in1.0936 ft
12 寸12 寸40 cm15.748 in1.3123 ft

03 /Usage notes

Modern mainland value

This converter uses 1 chi = 1/3 meter, so 1 cun = 1/30 meter.

Where it appears

Cun appears in traditional measurements, older product notes, body-measure phrases and Chinese medicine contexts.

Historical caution

Historical and regional cun values can vary. Use this for modern mainland-style conversions.

04 /Modern Chinese unit context

Length units such as chi, cun and zhang are tied to modern metric values in current mainland use. Older architecture, classical texts and regional references may need a separate source check.

Use this page as a quick lookup, then keep the original Chinese unit beside the converted number when accuracy matters. That is especially important for pricing, schoolwork, land records, shipping documents, recipes, medicine, historical writing or any source where the unit may be part of a larger standard.

For the broader table and source caveats, read the Chinese units conversion chart.