Millimeters to Zhang (Chinese) (mm to zhang)

1 millimeter equals 0.0003 zhang (Chinese) exactly.

1 millimeter = 0.0003 zhang (Chinese)

How to convert millimeters to zhang (Chinese)

To convert millimeters to zhang (Chinese), multiply the number of millimeters by 0.0003. This factor is exact. To go the other way, multiply zhang (Chinese) by 3,333.333333 (rounded).

zhang (Chinese) = millimeters × 0.0003

Example: 10 millimeters = 0.003 zhang (Chinese).

About these units

Millimeter (mm)

Metric (SI)Current unit

One thousandth of a meter. Used in engineering, manufacturing and rainfall measurement.

Carl Friedrich Gauss put the millimeter at the base of his 1832 proposal for absolute units, pairing it with the milligram and the second, although the centimeter-based CGS system later won out among scientists. The name combines the metric prefix milli-, from the Latin for one thousand, with the meter. Since 1983 a millimeter has been tied to the speed of light: it is the distance light covers in 1/299,792,458,000 of a second.

Millimeters are the language of fine mechanical work. Standard rulers are divided into them, digital calipers commonly read to 0.01 mm, and mechanical pencil leads come in 0.5 and 0.7 mm. Copy paper is about 0.1 mm thick, and a thin hair, at 0.02 to 0.04 mm across, is close to the smallest thing the naked eye can see. A wave with a frequency of 300 GHz has a wavelength of 1 mm. An inch is exactly 25.4 mm. One trap for readers in the United States is that mil there traditionally means a thousandth of an inch, not a millimeter.

1 millimeter = 0.001 meters (exactly).

Sources: Wikipedia: Millimetre; Wikipedia: Centimetre-gram-second system of units; NIST Guide to the SI, Appendix B.8: conversion factors

Zhang (Chinese) (zhang)

ChineseTraditional unit (still used in some regions)

Ten chi, 10/3 m (about 3.33 m) in the modern market system.

Ten chi made one zhang, so the unit was always a measure of the human scale of buildings and cloth rather than of personal reach. It turns up in Chinese architecture as a way to describe the width of a bay and the height of walls and pillars. Since the chi itself changed from dynasty to dynasty, the zhang changed in step with it and had no independent standard.

Republican law fixed it twice. In 1915 the Republic of China set it at about 3.2 m, and in 1930 the figure was revised to exactly 10/3 m, about 3.33 m, which is the value used here. Mainland China uses it rarely today, and everyday speech tends toward meters. The Japanese jo is built the same way from ten shaku, giving about 3.03 m, which shows how a shared structure produced different lengths.

1 zhang (Chinese) = 3.333333333 meters (approximately).

Sources: Wikipedia: Zhang (unit); Wikipedia: Chinese units of measurement

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