Is the symbol of hectare ha or hm? The unit symbol of hectare is hm? Where hm stands for 100 meter, huh? The square hundred meters refers to the square of 100 meters, that is, 10000 square meters, that is, 1 hectare. In addition, hectares can also be represented by ha, which is the English abbreviation of hectares. Ha is not recommended in China.

Symbol: Ha, huh? . The land area stipulated in China has three units: square meters (m? ), hectares (hm? ), square kilometers (Km? )。

Conversion formula:

1 cm2 = 100 mm2 =0. 1550 in2.

1 square meter = 10000 square centimeter = 1. 1960 square yard.

1 hectare =15mu =10000m2.

1 mu = 666.67m2.

1 ha =10000m2 = 2.445438+0 1 mu.

1 square kilometer = 100 hectare = 0.385438+0 square mile.

English system:

1 square inch =6.45 16 square centimeter

1 square foot = 144 square inch =0.0929 square meter.

1 square yard =9 square feet =0.836 1 square meter

1 acre = 4,840 square yards = 4,046.86 square meters

1 square mile =640 acres =259.0 hectares