To help compare different orders of magnitude and geographical regions, we list here areas between 100 km² and 1000 km². See also areas of other orders of magnitude.
- Areas less than 100 km²
- 100 km² is equal to:
- 1 E+8 m²
- a square with sides 10 km long
- 10,000 hectares
- approx. 38.6 square miles
- approx 24,711 acres
- 102 km² -- Athens, Alabama, USA
- 104 km² -- Hsinchu City, Taiwan
- 105 km² -- Srinagar, Jammu and Kashmir, India
- 115 km² -- Vancouver, British Columbia, Canada (city proper)
- 116 km² -- Jersey, Channel Islands, UK
- 121 km² -- Saint Helena Island
- 124 km² -- Nantucket Island, Massachusetts, United States
- 127 km² -- Penghu County, Taiwan
- 127 km² -- Lake Tisza, Hungary
- 133 km² -- Keelung City, Taiwan
- 143 km² -- Island of Okushiri, Hokkaido, Japan
- 148 km² -- Callao Region, Peru
- 150 km² -- London Borough of Bromley, largest London Borough
- 153 km² -- Kinmen County, China (Taiwan)
- 154 km² -- Kaohsiung City, Taiwan
- 160 km² -- Liechtenstein (country ranked 188th by area)
- 163 km² -- Taichung City, Taiwan
- 175.5 km² -- Glasgow, Scotland
- 176 km² -- Tainan City, Taiwan
- 177 km² -- Washington, D.C., United States
- 182 km² -- Rishiri Island, Hokkaido, Japan
- 185 km² -- Johor Bahru, Malaysia
- 185.5 km² -- Plano, Texas, United States
- 188 km² -- Beaver Island, largest island in Lake Michigan
- 193 km² -- Aruba
- 199 km² -- Municipality of San Juan, Puerto Rico
- 203.1 km² -- Poquoson, Virginia, United States
- 213.5 km² -- Cleveland, Ohio, United States
- 219 km² -- Amsterdam, Netherlands
- 243.65 km² -- Kuala Lumpur, the capital of Malaysia
- 246 km² -- Malta Island (main island of Malta)
- 255 km² -- Island of Shikotan, Hokkaido, Japan
- 259 km² -- Edinburgh, Scotland
- 259 km² -- Island of Martha's Vineyard, United States
- 260 km² -- Niue
- 272 km² -- Taipei City, Taiwan
- 282 km² -- Bagnes, Valais (largest municipality of Switzerland)
- 316 km² -- Malta (country ranked 185th by area)
- 319 km² -- Rotterdam, The Netherlands
- 360 km² -- Belgrade, Serbia
- 360 km² -- Gaza Strip
- 370 km² -- Detroit, Michigan, United States
- 380 km² -- ATE Salisbury Plain, England (the UK's largest military training area)
- 381 km² -- Isle of Wight
- 425 km² -- Gatun Lake
- 426 km² -- Oslo, capital of Norway
- 444 km² -- Chattanooga, Tennessee, United States
- 451 km² -- Seychelles
- 465 km² -- Winnipeg, Manitoba, Canada
- 468 km² -- Andorra
- 496 km² -- Prague, Czech Republic
- 500 km² -- Montreal, Quebec, Canada
- 501 km² -- Gwangju Metropolitan City, South Korea
- 517 km² -- Warsaw, Poland
- 525 km² -- Budapest, Hungary
- 530 km² -- Isle Royale, largest island in Lake Superior
- 540 km² -- Daejeon Metropolitan City, South Korea
- 570 km² -- Isle of Man
- 571 km² -- Ibiza Island, Spain
- 573 km² -- Klang, Selangor, Malaysia
- 575 km² -- Kiritimati, Kiribati
- 582 km² -- Lake Geneva
- 597 km² -- Nis, Serbia
- 604 km² -- Mumbai, India
- 606 km² -- Chicago (city proper), Illinois, United States
- 607 km² -- Madrid (city), Spain
- 614 km² -- Seoul Special City, South Korea
- 616 km² -- Lake Taupo, the largest lake in New Zealand
- 636 km² -- Metro Manila, Manila, Philippines
- 641 km² -- Toronto, Ontario, Canada
- 641 km² -- Zagreb, Croatia
- 647 km² -- Singapore (excluding offshore islands)
- 684 km² -- Edmonton, Alberta, Canada
- 700 km² -- Pune, India
- 704 km² -- Singapore (all land area)
- 741 km² -- Bangalore, India
- 754 km² -- Dominica (country ranked 172nd by area)
- 755 km² -- Hamburg Germany
- 763 km² -- Busan Metropolitan City, South Korea
- 790 km² -- Calgary, Alberta, Canada
- 798 km² -- Perm, Perm Krai, Russia
- 810 km² -- Perlis, the smallest state in Malaysia
- 823 km² -- Kansas City, Missouri, United States
- 835 km² -- New York, New York, United States
- 886 km² -- Daegu Metropolitan City, South Korea
- 892 km² -- Berlin, Germany
- 950 km² -- Dartmoor
- 965 km² -- Incheon Metropolitan City, South Korea
- Areas more than 1000 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 |
|