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Area Conversion Matrix

All 12 area units in one table — 132 pre-computed conversions, click any cell for the full converter.

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Area Conversion Matrix — All 12×11 Conversions

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How to read: rows are the from unit, columns are the to unit. Each cell shows how many column-units equal 1 row-unit. Click any cell for its full converter.
Square Meter
km²
Square Kilometer
cm²
Square Centimeter
mm²
Square Millimeter
ha
Hectare
ac
Acre
ft²
Square Foot
in²
Square Inch
yd²
Square Yard
mi²
Square Mile
rai
Rai
dunam
Dunam
Square Meter
0.00000110,0001,000,0000.00010.00024710.763911,550.00311.195993.861e-70.0006250.001
km²
Square Kilometer
1,000,00010,000,000,0001,000,000,000,000100247.1053810,763,9101,550,003,1001,195,9900.3861026251,000
cm²
Square Centimeter
0.00011 × 10^-101001 × 10^-82.471 × 10^-80.0010760.1550.000123.861 × 10^-116.25 × 10^-81e-7
mm²
Square Millimeter
0.0000011 × 10^-120.011 × 10^-102.471 × 10^-100.000010760.001550.0000011963.861 × 10^-136.25 × 10^-101 × 10^-9
ha
Hectare
10,0000.01100,000,00010,000,000,0002.471054107,639.115,500,03111,959.90.0038616.2510
ac
Acre
4,046.85640.00404740,468,5644,046,856,4000.40468643,5606,272,6404,8400.0015632.5292854.046856
ft²
Square Foot
0.0929039.29 × 10^-8929.030492,903.040.000009290.000022961440.1111113.587 × 10^-80.000058060.0000929
in²
Square Inch
0.0006456.452 × 10^-106.4516645.166.452 × 10^-81.594e-70.0069440.0007722.491 × 10^-104.032e-76.452e-7
yd²
Square Yard
0.8361278.361e-78,361.2736836,127.360.000083610.00020791,2963.228e-70.0005230.000836
mi²
Square Mile
2,589,988.12.58998825,899,881,0002,589,988,110,336258.9988164027,878,4004,014,489,6003,097,6001,618.74262,589.9881
rai
Rai
1,6000.001616,000,0001,600,000,0000.160.39536917,222.2572,480,0051,913.58410.0006181.6
dunam
Dunam
1,0000.00110,000,0001,000,000,0000.10.24710510,763.911,550,003.11,195.990.0003860.625

Popular Area Conversions

Most-used tools
Square MeterSquare Kilometer
1 = 0.000001 km²
Square MeterSquare Centimeter
1 = 10,000 cm²
Square MeterSquare Millimeter
1 = 1,000,000 mm²
Square MeterHectare
1 = 0.0001 ha
Square MeterAcre
1 = 0.000247 ac
Square MeterSquare Foot
1 = 10.76391 ft²

About Area Conversion

Area measures two-dimensional space — the extent of a surface. The SI unit is the square meter (m²), defined as the area of a square with 1-meter sides. This converter handles metric area units (square meter, square kilometer, square centimeter, hectare = 10,000 m²), imperial units (square foot, square yard, square inch, square mile, acre = 43,560 ft²), and regional units (rai for Thailand = 1,600 m², dunam for Middle East = 1,000 m²). The hectare and acre are the most-used land units globally, with 1 hectare ≈ 2.471 acres. Use area conversion for real estate listings, agricultural land sizing, construction projects, geographic and demographic studies, and engineering. The square meter is the international standard, but the square foot dominates American real estate, and the acre remains entrenched in American and British property records.

Quick Area Conversion Tips

  • 1 hectare (10,000 m²) is about the size of a rugby pitch or 2.5 soccer fields. Most European farmland is measured in hectares.
  • 1 acre ≈ 0.405 hectares. The US and UK measure rural land in acres.
  • European apartments are advertised in m², US homes in ft². 100 m² ≈ 1076 ft².
  • Always distinguish land area (horizontal) from floor area (interior). Property listings often refer to either.

Common Area Mistakes

  • Confusing linear units (m) with area units (m²). 20 m is a length; 20 m² is an area.
  • Mixing acres and hectares in agricultural contracts — acres are 40% smaller.
  • Reading "sq ft" in a US listing as "ft" — a 100 ft² closet is 10 m², not 100 m².
  • Using US and UK fluid units on area — no relation, different dimensions.

Related Resources

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In-depth definition, history and use cases
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