Square Meters to Square Kilometers Converter
Convert land area from m² to km² with scientific notation support for small values. Includes real-world geographic comparisons.
About
Geographic scale often defies intuition when shifting between human-scale measurements and map-scale dimensions. This tool converts Area A from square meters (m2) to square kilometers (km2), bridging the gap between urban lots and territorial expanses. Accuracy is paramount in cartography, environmental planning, and large-scale real estate analysis, where a decimal error represents a massive disparity in actual land mass.
We address the phenomenon of "decimal blindness" by automatically formatting results. When the output falls below a perceptible threshold (specifically 0.0001 km2), the system switches to Scientific Notation (e.g., 5.4 × 10-5). This ensures that students, geographers, and analysts correctly interpret the magnitude of small areas relative to a square kilometer.
Formulas
The conversion relies on the definition of a kilometer. Since 1 km = 1,000 m, squaring both sides yields the conversion factor.
For scientific notation when x < 10-4:
Where m is the significand (coefficient) and n is the integer exponent.
Reference Data
| Location / Entity | Area (m2) | Area (km2) | Note |
|---|---|---|---|
| Average Parking Space | 12.5 | 1.25 × 10-5 | Too small for km² |
| Basketball Court (NBA) | 436.6 | 4.37 × 10-4 | Micro-scale |
| Soccer Field (FIFA Std) | 7,140 | 0.00714 | Standard Pitch |
| Red Square (Moscow) | 23,100 | 0.0231 | Urban Landmark |
| The Pentagon (Floor Area) | 600,000 | 0.6 | Massive Building |
| Old City of Jerusalem | 900,000 | 0.9 | Historic District |
| Central Park (NYC) | 3,410,000 | 3.41 | Urban Park |
| Gibraltar | 6,800,000 | 6.8 | Territory |
| Heathrow Airport | 12,270,000 | 12.27 | Major Infrastructure |
| Disneyland Paris | 19,420,000 | 19.42 | Resort Complex |
| Manhattan Island | 59,100,000 | 59.1 | Major Borough |
| Paris (City Proper) | 105,400,000 | 105.4 | Capital City |