📏 Square meters to Square kilometers Converter
Convert square meters (m²) to square kilometers (km²) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 square meter (m²) = 0.000001 square kilometers (km²). Formula: km² = m² × 0.000001.
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Square meters to Square kilometers Converter inputs
Result
Square meters to Square kilometers conversion table
| Square meters (m²) | Square kilometers (km²) |
|---|---|
| 0.1 m² | 1e-7 km² |
| 0.5 m² | 5e-7 km² |
| 1 m² | 0.000001 km² |
| 2 m² | 0.000002 km² |
| 3 m² | 0.000003 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 |
| 1,000 m² | 0.001 km² |
Other area conversions
How to convert square meters to square kilometers
Multiply the number of square meters by 0.000001 to get square kilometers: km² = m² × 0.000001.
Example: 5 m² = 0.000005 km².
The square meter (m²) and the square kilometer (km²) are both units of area. Need the opposite direction? Use the km² to m² converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many square kilometers are in a square meter?
1 square meter = 0.000001 square kilometers.
How do I convert square meters to square kilometers?
Use the formula km² = m² × 0.000001. For example, 5 m² = 0.000005 km².
How do I convert square kilometers back to square meters?
1 square kilometer = 1,000,000 square meters. Use the km² to m² converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.