1 square kilometer (km²) = 10,000,000,000 square centimeters (cm²). To convert, multiply by 10,000,000,000: cm² = km² × 10,000,000,000. For example, 5 km² = 50,000,000,000 cm².
cm² = km² × 10,000,000,000
Square kilometers to square centimeters table
| Square kilometers (km²) | Square centimeters (cm²) |
|---|---|
| 1 | 10,000,000,000 |
| 2 | 20,000,000,000 |
| 3 | 30,000,000,000 |
| 4 | 40,000,000,000 |
| 5 | 50,000,000,000 |
| 10 | 100,000,000,000 |
| 20 | 200,000,000,000 |
| 25 | 250,000,000,000 |
| 50 | 500,000,000,000 |
| 100 | 1,000,000,000,000 |
| 250 | 2,500,000,000,000 |
| 500 | 5,000,000,000,000 |
| 1,000 | 10,000,000,000,000 |
The two units
Square kilometer (km²). One million square meters, or 100 hectares.
Square centimeter (cm²). One ten-thousandth of a square meter.
Because both units are defined in terms of the same base unit, the factor 10,000,000,000 is exact, not a rounded measurement.
Convert square kilometers to other units
- Square kilometers to square meters — 1 km² = 1,000,000 m²
- Square kilometers to hectares — 1 km² = 100 ha
- Square kilometers to acres — 1 km² = 247.1053815 ac
- Square kilometers to square feet — 1 km² = 10,763,910.42 ft²
- Square kilometers to square inches — 1 km² = 1,550,003,100 in²
- Square kilometers to square yards — 1 km² = 1,195,990.046 yd²
- Square kilometers to square miles — 1 km² = 0.3861021585 mi²
Convert other units to square centimeters
Questions people ask
- How many square centimeters are in a square kilometer?
- 10,000,000,000, exactly.
- How do you convert square kilometers to square centimeters?
- cm² = km² × 10,000,000,000. It is the same as dividing by 1e-10.
- How do you convert square centimeters back to square kilometers?
- km² = cm² ÷ 10,000,000,000. See square centimeters to square kilometers.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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