1 E+5 m²

The base area of The Pentagon, Washington DC, United States, is 100,000 m², if the courtyard is excluded.

To help compare sizes of different geographic regions, areas between 10 hectares (100,000 m²) and 100 hectares (1,000,000 m²) are listed below.

Areas smaller than 0.1 km²
0.1 km² is equal to:
- 1 E+5 m² or 100,000 m²
- 10 hectares
- 25 acres
- 1.08 million square feet
- the area of a square with side of 316.2 m
12 hectares -- Base area of The Pentagon, USA
13 hectares -- Place des Quinconces, Bordeaux
18 hectares -- Jethou
19 hectares -- Irish National Botanic Gardens
19 hectares -- Liancourt Rocks (total area, all islets)
25 hectares -- Tuileries Garden
28 hectares -- Ponte Tresa (smallest municipality of Switzerland)
34 hectares -- Disneyland (public areas)
35 hectares -- Palace of the Parliament, Bucharest (floorspace)
36 hectares -- Ryugyong Hotel in Pyongyang, North Korea (floorspace of largest unoccupied building)
40 hectares -- Macroplaza, Monterrey
44 hectares -- Vatican City
44 hectares -- Tiananmen Square, Beijing
62 hectares -- The Pentagon (gross floor area)
72 hectares -- Forbidden City, Beijing
90 hectares -- Garden of the Versailles Palace [1]
99 hectares -- Aalsmeer Flower Auction in Aalsmeer, Holland (floorspace)
Areas larger than 1 km²

SI derived unit square metre, from base unit metre				Orders of magnitude for area							Conversion of units 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 m² = 1 Gm²	1 E+24 m² = 1 Tm²	1 E+30 m² = 1 Pm²
10 fm²	10 pm²	10 nm²	10 µm²	10 mm²			10 m²			10 km²	10 Mm²	10 Gm²	10 Tm²	1 E+36 m² = 1 Em²
100 fm²	100 pm²	100 nm²	100 µm²	100 mm²	=	1 cm²	100 m²	=	1 dam² aka a	100 km²	100 Mm²	100 Gm²	100 Tm²	1 E+40 m²
1,000 fm²	1,000 pm²	1,000 nm²	1,000 µm²	1,000 mm²	=	10 cm²	1,000 m²	=	10 dam² aka a	1,000 km²	1,000 Mm²	1,000 Gm²	1,000 Tm²	1 E+41 m²
10,000 fm²	10,000 pm²	10,000 nm²	10,000 µm²	10,000 mm²	=	1 dm²	10,000 m²	=	1 hm² aka ha	10,000 km²	10,000 Mm²	10,000 Gm²	10,000 Tm²	1 E+42 m² = 1 Zm²
100,000 fm²	100,000 pm²	100,000 nm²	100,000 µm²	100,000 mm²	=	10 dm²	100,000 m²	=	10 hm² aka ha	100,000 km²	100,000 Mm²	100,000 Gm²	100,000 Tm²	1 E+48 m² = 1 Ym²