1 E+21 m²

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To help compare sizes of different surface areas, we list here areas of the order of 1021 square metres, i.e. those between 1 quadrillion km² and 10 quadrillion km². See also areas of other orders of magnitude.

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