Overview
The notation 1 E7 m², written more formally as 1 × 107 m² or 1×10^7 m², denotes an area of ten million square metres. In everyday metric units this equals 10 square kilometres or 1,000 hectares. It is a compact way to express large areas using scientific notation, commonly used in mapping, land planning and environmental statistics. For general reading on area units see area units.
Conversions and equivalents
Key equivalences for 1×107 m²:
- 10 km² (since 1 km² = 1,000,000 m²)
- 1,000 hectares (1 ha = 10,000 m²; see hectare)
- about 3.86 square miles (approximate, used for comparison with non-metric measures)
Uses and examples
Areas of this magnitude are useful for describing small municipalities, large urban parks, modest lakes or islands, and extensive agricultural holdings. For instance, ten square kilometres is roughly one-tenth the size of a major European city proper—useful when comparing administrative areas or planning land use. Cartographers, ecologists and engineers commonly employ the 1 E7 m² scale when summarizing regional statistics or presenting maps.
Context and notable facts
Writing area in powers of ten keeps numbers readable and consistent with SI conventions. The form "1 E7 m²" follows computer-friendly notation where "E" denotes "times ten to the" and is often used in datasets and technical reports. For guidance on SI units and related practice see unit guidance. Remember that 1×107 m² is an exact conversion—unlike a range—and should not be confused with intervals such as 10–100 km².
Practical comparison lists and maps typically group areas by order of magnitude (for example 106, 107, 108 m²) to show relative size without long digit strings. This approach helps decision-makers and the public grasp scale when discussing land management, conservation or urban development.