1 E+8 m²

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
* 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 -- 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
* 450 to 500 km² -- Approximate annual pizza consumption in the 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)
* 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