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.
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 |