📏 Square kilometers to Square meters Converter
Convert square kilometers (km²) to square meters (m²) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 square kilometer (km²) = 1,000,000 square meters (m²). Formula: m² = km² × 1,000,000.
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Square kilometers to Square meters Converter inputs
Result
Square kilometers to Square meters conversion table
| Square kilometers (km²) | Square meters (m²) |
|---|---|
| 0.1 km² | 100,000 m² |
| 0.5 km² | 500,000 m² |
| 1 km² | 1,000,000 m² |
| 2 km² | 2,000,000 m² |
| 3 km² | 3,000,000 m² |
| 5 km² | 5,000,000 m² |
| 10 km² | 10,000,000 m² |
| 20 km² | 20,000,000 m² |
| 25 km² | 25,000,000 m² |
| 50 km² | 50,000,000 m² |
| 100 km² | 100,000,000 m² |
| 1,000 km² | 1,000,000,000 m² |
Other area conversions
How to convert square kilometers to square meters
Multiply the number of square kilometers by 1,000,000 to get square meters: m² = km² × 1,000,000.
Example: 5 km² = 5,000,000 m².
The square kilometer (km²) and the square meter (m²) are both units of area. Need the opposite direction? Use the m² to km² 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 meters are in a square kilometer?
1 square kilometer = 1,000,000 square meters.
How do I convert square kilometers to square meters?
Use the formula m² = km² × 1,000,000. For example, 5 km² = 5,000,000 m².
How do I convert square meters back to square kilometers?
1 square meter = 0.000001 square kilometers. Use the m² to km² 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.