Formula for calculating the number of acres of land

The calculation formula of mu land is mu land = area (square meter) ÷666.67.

Mu is a unit of land area and a traditional unit of measurement. It is usually used to measure the area of farmland. An acre is equal to one tenth of a hectare, about 666.7 square meters or 0.0667 hectares. Mu is a common unit of land area measurement and an important unit of measurement in agricultural production.

In ancient China, mu was a unit for measuring fields, which was mentioned in ancient books such as Zhou Li, Zhuangzi and Lv Chunqiu. Due to China's large area, the mu size of different provinces may be slightly different, but in general, 1 mu is about 666.7 square meters.

Different from the surface data, the actual values of weights and measures in past dynasties have changed to varying degrees. Qin and Han dynasties took six feet as steps, and one foot was about 23 cm long. Sui and Tang dynasties took five feet as steps, and one foot was about 30 centimeters long. In contrast, the human stride has hardly changed. One step (one left and one right) is basically 1.4 to 1.5 meters. According to the median value1.45m, one acre is about 500 square meters.

Land survey methods and their advantages;

1, traditional measurement method.

Including direct measurement, indirect measurement and photogrammetry. These methods rely on human feelings and manual operation, and usually use traditional maps, measuring tools and instruments, and the measurement results are not as accurate as modern measurement methods. The advantages of the traditional survey method are simple operation, convenient implementation and low survey cost, and it is suitable for small-scale land survey, operation and investigation.

2.GPS measurement method.

GPS measurement is a method of measuring by using global positioning system. It measures the position, topography and geomorphology of land through satellite signals and triangulation technology, and has the advantages of high precision and high degree of automation. The advantage is that the GPS survey method has the advantages of high precision, high degree of automation and large coverage area, and is suitable for large-scale land survey, operation and investigation.

3. Remote sensing measurement.

Remote sensing survey is a method to obtain land information and data through remote sensing technology such as aviation and satellite. Remote sensing measurement can obtain various images, data and information, including hydrology, topography, vegetation and land use indicators. The advantages of this method are high efficiency, wide coverage, accurate acquisition of land information and parameters, and suitability for small and medium-sized land surveys.