# How do you convert hectares to miles?

The question is also answered here: How many square centimeters are 1 square meter?

**Name of the unit of area,**

*A.***Relationship to the SI unit square meter, m**Square meter (SI unit of area,

^{2}*A.*)≡ 1 m × 1 m = 1 m

^{2}Barn; b≡ 10

^{-28}m

^{2}Circular mil; circular thou; circ mil≡ π / 4 mil

^{2}≈ 5,067 075×10

^{-10}m

^{2}Square mil; square thou; sq mil≡ 1 mil

^{2}= 6,4516×10

^{-10}m

^{2}Circular inch; circ in≡ π / 4 in

^{2}≈ 5,067 075×10

^{-4}m

^{2}Square inch; sq in; Square inches≡ 1 in

^{2}= 6,4516×10

^{-4}m

^{2}Board; bd≡ 1 in × 1 ft = 7.741 92 × 10

^{-3}m

^{2}Square link; sq lnk≡ 1 lnk

^{2}= 4,046 856 422 4×10

^{-2}m

^{2}Square foot; sq ft; Square feet≡ 1 ft

^{2}= 9,290 304×10

^{-2}m

^{2}Square yard; sq yd; Square yards≡ 1 yd

^{2}= 0.836 127 36 m

^{2}Cord≡ 192 bd = 1.486 448 64 m

^{2}Boiler Horsepower equivalent direct radiation; bhp EDR≡ 1 sq ft × 1 bhp / 240 BTU IT / h ≈ 12,958 174 m

^{2}Square rod; pole; perch; approx

^{2}≡ 25,292 852 64 m

^{2}Are; a≡ 100 m

^{2}Square chain; sq ch≡ 1 ch

^{2}= 404.685 642 24 m

^{2}Dunam≡ 1000 m

^{2}Rood; ro≡ 1/4 ac = 1011.714 105 6 m

^{2}Acre; ac≡ 10 sq ch = 4840 sq yd = 4046.856 422 4 m

^{2}Hectares; Ha≡ 10,000 m

^{2}= 0.01 km

^{2}Yardland≡ 30 ac = 1.214 056 926 72 × 10

^{5}m

^{2}Hide≡ 100 ac = 4.046 856 422 4 × 10

^{5}m

^{2}Square kilometre; km

^{2}≡ 10

^{6}m

^{2}Square mile; section; sq mi; mi

^{2}; Square mile≡ 2,589 988 110 336×10

^{6}m

^{2}Square Statute Mile; square US Survey mile; sq mi≈ 2,589 998×10

^{6}m

^{2}Township≡ 36 sq mi (US) ≈ 9.323 994 × 10

^{7}m

^{2}Barony≡ 4000 ac = 1.618 742 568 96 × 10

^{7}m

^{2}

A **surface** is measured in the following units:

1 square kilometer (km^{2}) corresponds to 100 hectares or a square with a side length of 1 km.

1 hectare (ha) corresponds to 100 ares; 1 Ar (a). One ar is equal to 100 square meters.

1 square meter (m^{2}) corresponds to 100 dm^{2} or a square with a side length of 1 m.

1 square decimeter (dm^{2}) corresponds to 100 square centimeters.

1 square centimeter (cm^{2}) corresponds to 100 square millimeters.

1 square millimeter (mm^{2}).

Square millimeters | mm² | 1 | mm² | = | 0.000001 m² |

Square centimeters | cm² | 1 | cm² | = | 0.0001 m² |

Square decimeters | dm² | 1 | dm² | = | 0.01 m² |

square meters | m² | 1 | m² | = | 0.01 a |

Ar | a | 1 | a | = | 100 m² |

Hectares | Ha | 1 | Ha | = | 10,000 m² |

Square kilometre | km² | 1 | km² | = | 1,000,000 m² |

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