Qing (Chinese) to Square Miles (qing to mi²)
1 qing (Chinese) equals 0.0257401439 square miles (rounded).
How to convert qing (Chinese) to square miles
To convert qing (Chinese) to square miles, multiply the number of qing (Chinese) by 0.0257401439. The factor is rounded to 10 significant digits. To go the other way, multiply square miles by 38.84982166 (rounded).
square miles = qing (Chinese) × 0.0257401439
Example: 10 qing (Chinese) = 0.257401439 square miles.
About these units
Qing (Chinese) (qing)
100 mu: about 6.67 hectares (66,667 m²). A traditional Chinese land unit.
Where the mu suits a family plot, the qing counts large holdings. It is defined as 100 mu, which comes to 6.67 hectares in the modern market system, or about 16.47 acres. Wikipedia glosses it in English as the Chinese hide, borrowing an old English term for a household's farmland.
Its size depends entirely on the mu beneath it. With the 1915 mu of 614.4 m² a qing was about 6.1 hectares, and with the 1930 mu of 666.67 m² it is the figure used here. Older dynasty values were smaller still, as the Han mu worked out to only about 461 m². The qing is now mostly a historical and literary term, and Chinese agriculture reports land in mu, hectares or, for large areas, in ten thousands of mu.
1 qing (Chinese) = 66,666.66667 square meters (approximately).
Sources: Wikipedia: Chinese units of measurement; Wikipedia: Mu (unit)
Square Mile (mi²)
640 acres or about 2.59 km². Used for the area of cities, states and countries in the US and UK.
A thousand Roman paces, mille passus, became the mile, and under Elizabeth I Parliament fixed the statute mile at eight furlongs, or 5,280 feet, in place of the older Roman-based value. The square mile inherits that length. Its most famous use came in the United States: the Land Ordinance of 1785 started the Public Land Survey System so that western land could be surveyed and sold to pay war debts, beginning with the Seven Ranges in eastern Ohio.
In that system a section is roughly one square mile, or 640 acres, and a township is 36 sections in a square six miles on a side. One square mile is nearly 2.59 million square meters. Chicago's Midway International Airport, at about 650 acres, covers roughly 1.02 square miles. Beware the phrase mile square: a region 20 miles square has 400 square miles, but so does a rectangle 10 by 40 miles. The US survey version of the mile was retired from 1 January 2023, but the international square mile remains the unit for cities, states and countries in the US and UK.
1 square mile = 2,589,988.11 square meters (approximately).
Sources: Wikipedia: Square mile; Wikipedia: Public Land Survey System; Wikipedia: Mile
Related conversions
- Square miles to qing (Chinese) (reverse)
- Qing (Chinese) to square meters
- Qing (Chinese) to square kilometers
- Qing (Chinese) to hectares
- Qing (Chinese) to square inches
- Qing (Chinese) to square feet
- Qing (Chinese) to square yards
- Qing (Chinese) to acres
- Square meters to square miles
- Square kilometers to square miles
- Hectares to square miles
- Square inches to square miles
- Square feet to square miles
- Square yards to square miles
- Acres to square miles
- Square centimeters to square miles
- Square millimeters to square miles
- Tsubo to square miles
- Pyeong to square miles
- Rai (Thai) to square miles
See all area units.