18 m2 = 0.000018 km2. To convert square meters to square kilometers, divide by 1,000,000: 18 ÷ 1,000,000 = 0.000018.
How to convert square meters to square kilometers
km2 = m2 × 0.000001
- 1 m2 = 0.000001 km2 (and 1 km2 = 1,000,000 m2).
- Multiply the amount by the factor: 18 × 0.000001 = 0.000018.
- Answer: 18 m2 = 0.000018 km2.
Shortcut: dividing by 1,000,000 gives the same result as multiplying by 0.000001.
Square Meters to Square Kilometers table
| Square Meters (m2) | Square Kilometers (km2) |
|---|---|
| 13 m2 | 0.000013 km2 |
| 14 m2 | 0.000014 km2 |
| 15 m2 | 0.000015 km2 |
| 16 m2 | 0.000016 km2 |
| 17 m2 | 0.000017 km2 |
| 18 m2 | 0.000018 km2 |
| 19 m2 | 0.000019 km2 |
| 20 m2 | 0.00002 km2 |
| 21 m2 | 0.000021 km2 |
| 22 m2 | 0.000022 km2 |
| 23 m2 | 0.000023 km2 |
| m2 | km2 |
|---|---|
| 1 m2 | 0.000001 km2 |
| 5 m2 | 0.000005 km2 |
| 10 m2 | 0.00001 km2 |
| 50 m2 | 0.00005 km2 |
| 100 m2 | 0.0001 km2 |
| 1,000 m2 | 0.001 km2 |