1 m² = 1.0000 × 10^−6 km²(square meter → square kilometer)
1 m² = 1.0000 × 10^−6 km²
1 square meter equals 1.0000 × 10^−6 square kilometers. To convert square meters to square kilometers, multiply the square meter value by 1.0000 × 10^−6. For quick reference: 1 m² = 1.0000 × 10^−6 km², 5 m² = 5.0000 × 10^−6 km², 10 m² = 1.0000 × 10^−5 km², 100 m² = 0.0001 km².
Square meters to square kilometers divides by 1,000,000 — the linear factor of 1,000 squared, which is the whole trap. A 500,000 m² industrial zone is 0.5 km², not 500 km². Dropping only three zeros instead of six is the single most common error in this conversion, and it misstates an area by a factor of a thousand. Use km² for districts and cities, m² for buildings and plots.
How to convert square meters to square kilometers
1
Take your value
Start with your value in square meters.
2
Multiply by 1.0000 × 10^−6
Multiply the square meter value by 1.0000 × 10^−6. This is the exact conversion factor from square meters to square kilometers.
3
Read the result
The product is your value in square kilometers. For example, 5 m² × 1.0000 × 10^−6 = 5.0000 × 10^−6 km².
Conversion formula
The exact factor from square meters to square kilometers is 1.0000 × 10^−6.
How do I convert back from square kilometers to square meters?
Multiply the square kilometer value by 1000000. For example, 1 km² = 1000000 m².
Is the square meter bigger than the square kilometer?
No. 1 square meter is smaller than 1 square kilometer. It takes 1000000 square meters to equal 1 square kilometer.
Are these conversion factors exact?
Yes. The factor of 1.0000 × 10^−6 is derived directly from the SI definitions of square meter and square kilometer.
About the square meter and the square kilometer
The square meter
The square meter is the SI unit of area — the area of a square one meter on each side. It's the standard for apartment and house listings in nearly every metric country, for material quantities (flooring, paint coverage), and for all scientific work. A typical parking space is about 12 m²; a singles tennis court is about 195 m².
The square kilometer
The square kilometer equals one million square meters — the standard unit for city, region, and country areas in metric countries. Manhattan is about 59 km²; Istanbul is about 5,461 km²; Turkey is about 783,562 km². One km² equals exactly 100 hectares or about 0.386 square miles.