Convert Square Meters to Square Kilometres (m2 to km2)
1 square meter (m²) = 0.000001 square kilometres (km²). 1 km² = 1000000 m². Example: 15 m² = 15 × 0.000001 = 0.000015 km².
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1 m² = 0.000001 km²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk square meter to square kilometre converter to paste a column from Excel.
How to Convert Square Meter to Square Kilometre
- 1 m² = 0.000001 km²
- 1 km² = 1000000 m²
- Example: convert 15 m² to km²: 15 m² = 15 × 0.000001 km² = 0.000015 km²
Formula
km² = m² ÷ 1000000
Derivation from SI units:
- 1 m² = 1 m × 1 m
- 1 km² = (1000 m)² = 10⁶ m² = 100 ha
Both units are defined exactly, so the factor is exact. Square Meter definition: square meter; Square Kilometre definition: square kilometre.
Worked examples
- A reading of 0.1 m² converts to 1 × 10⁻⁷ km².
0.1 m² × 0.000001 = 1 × 10⁻⁷ km² - A value of 20 m² is 0.00002 km².
20 m² × 0.000001 = 0.00002 km²
Square Meter to Square Kilometre conversion table
| Square Meters (m²) | Square Kilometres (km²) |
|---|---|
| 0.0001 m² | 1 × 10⁻¹⁰ km² |
| 0.0005 m² | 5 × 10⁻¹⁰ km² |
| 0.001 m² | 1 × 10⁻⁹ km² |
| 0.002 m² | 2 × 10⁻⁹ km² |
| 0.0025 m² | 2.5 × 10⁻⁹ km² |
| 0.01 m² | 1 × 10⁻⁸ km² |
| 0.1 m² | 1 × 10⁻⁷ km² |
| 0.35 m² | 3.5 × 10⁻⁷ km² |
| 0.5 m² | 5 × 10⁻⁷ km² |
| 1 m² | 0.000001 km² |
| 2 m² | 0.000002 km² |
| 5 m² | 0.000005 km² |
| 10 m² | 0.00001 km² |
| 20 m² | 0.00002 km² |
| 25 m² | 0.000025 km² |
| 50 m² | 0.00005 km² |
| 100 m² | 0.0001 km² |
| 500 m² | 0.0005 km² |
| 1000 m² | 0.001 km² |
| 10000 m² | 0.01 km² |
Where it's used
Square Meters are used for floor and room areas, while square kilometres appear in city, lake and country areas. Both measure area, so the conversion is a fixed factor.
Square Meter to other area units
| Conversion | 1 m² equals |
|---|---|
| square meter to square kilometre | 0.000001 km² |
| square meter to square centimeter | 10000 cm² |
| square meter to square foot | 10.76391042 ft² |
| square meter to square inch | 1550.0031 in² |
| square meter to hectare | 0.0001 ha |
| square meter to acre | 0.0002471053815 ac |
| square meter to square millimeter | 1000000 mm² |
| square meter to square yard | 1.195990046 yd² |
Show 1 more units
| square meter to square mile | 3.861021585 × 10⁻⁷ mi² |
|---|
Frequently asked questions
How many square kilometres are in 1 square meter?
1 m² = 0.000001 km².
How do I convert square meters to square kilometres?
Multiply the value in m² by 0.000001, or divide it by 1000000. For example, 15 m² × 0.000001 = 0.000015 km².
Is the m² to km² conversion exact?
Yes. Both units are defined exactly, and 1 m² is exactly 0.000001 km².
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 2, coherent derived units.
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Square Meters to Square Kilometres (m2 to km2). Retrieved October 25, 2026, from https://scientificconverters.com/area/square-meters-to-square-kilometers/
IEEE
Scientific Converters, "Convert Square Meters to Square Kilometres (m2 to km2)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/area/square-meters-to-square-kilometers/