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To help compare sizes of different geographic regions, we list here areas between 10 km² (1,000 hectares) and 100 km² (10,000 hectares). See also areas of other orders of magnitude.

• Areas smaller than 10 km²
• 10 km² is equal to:
  • 1 E+7 m² or 10⁷ m²
  • 3.86 square miles
  • 1,000 hectares
  • 2,471 acres
• 10.1 km² -- Long Beach, New York
• 10.2 km² -- Radford, Virginia
• 12 km² -- Royal Borough of Kensington and Chelsea
• 12.48 km² -- Chek Lap Kok, the site of Hong Kong International Airport
• 15 km² -- Beverly Hills, California
• 21 km² -- Nauru
• 21.6 km² -- Abingdon, Virginia, United States
• 26 km² -- Tuvalu
• 26.4 km² -- Compton, California
• 26.5 km² -- Sylhet, Bangladesh
• 26.6 km² -- Charlottesville, Virginia
• 28.6 km² -- Macau
• 30 km² -- Hayling Island
• 37.89 km² -- Sabadell, Spain
• 38.55 km² -- City of Manila, Philippines
• 47 km² -- Pelee Island, largest island in Lake Erie
• 48.7 km² -- Lake Lugano, Switzerland/Italy
• 53.3 km² -- Bermuda
• 57.5 km² -- Nijmegen, The Netherlands
• 59.47 km² -- Manhattan Island
• 61 km² -- Indiana Dunes National Lakeshore
• 61 km² -- San Marino
• 70 km² -- Amherst Island, largest island in Lake Ontario
• 75 km² -- Arapawa Island, Marlborough, New Zealand
• 80 km² -- Chía, Cundinamarca, Colombia
• 81.7 km² -- Huntington Beach, California
• 83.2 km² -- Formentera Island, Spain
• 86.9 km² -- Paris, France
• 88 km² -- Saint Martin island
• 88.8 km² -- Eindhoven, The Netherlands
• 92 km² -- Waiheke Island, Auckland, New Zealand
• 93.239572 km²—1 Survey township or 36 mi² (USA)
• 95 km² -- Skopelos Island, Greece
• 98.2 km² -- The Hague, The Netherlands
• Areas larger than 100 km²

Orders of magnitude for area
1 E-30 m² = 1 fm² 1 E-24 m² = 1 pm² 1 E-18 m² = 1 nm² 1 E-12 m² = 1 µm² 1 E-6 m² = 1 mm² 1 E0 m² = 1 m² 1 E+6 m² = 1 km² 1 E+12 m² = 1 Mm² 1 E+18-24 m² : 1 Gm²
10 fm² 10 pm² 10 nm² 10 µm² 10 mm² 10 m² 10 km² 10 Mm² > 1 E+24 m² : 1 Tm²
100 fm² 100 pm² 100 nm² 100 µm² 100 mm² = 1 cm² 100 m² = 1 a 100 km² 100 Mm²  
1,000 fm² 1,000 pm² 1,000 nm² 1,000 µm² 10 cm² 10 a 1,000 km² 1,000 Mm²  
10,000 fm² 10,000 pm² 10,000 nm² 10,000 µm² 100 cm² 10,000 m² = 1 ha 10,000 km² 10,000 Mm²  
100,000 fm² 100,000 pm² 100,000 nm² 100,000 µm² 1,000 cm² 10 ha 100,000 km² 100,000 Mm²  
SI derived unit square metre, from base unit metre Conversion of units for area