Square kilometres to square metres converter
Square metres (m²)
1 square kilometre = 1,000,000 square metres
How to convert square kilometres to square metres
m² = km² × 1000000
Multiply the number of square kilometres by 1000000 to get square metres. Going the other way, divide by 1000000 (or multiply by 0.000001).
One square kilometre is exactly defined as 1000000 square metres (to 12 significant figures), and one square metre is 0.000001 square kilometres.
Worked examples
- Convert 5 square kilometres: 5 × 1000000 = 5,000,000 5,000,000 square metres.
- Convert 12.5 square kilometres: 12.5 × 1000000 = 12,500,000 12,500,000 square metres.
- Convert 250 square kilometres: 250 × 1000000 = 250,000,000 250,000,000 square metres.
Quick-reference table
| km² | m² |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 15 | 15,000,000 |
| 20 | 20,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 75 | 75,000,000 |
| 100 | 100,000,000 |
| 1,000 | 1,000,000,000 |
| m² | km² |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 15 | 0.000015 |
| 20 | 0.00002 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 75 | 0.000075 |
| 100 | 0.0001 |
| 1,000 | 0.001 |
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Frequently asked questions
How many square metres are in 1 square kilometre?
1 square kilometre equals 1,000,000 square metres.
What is the formula to convert square kilometres to square metres?
Use m² = km² × 1000000. Multiply the number of square kilometres by 1000000 to get square metres. Going the other way, divide by 1000000 (or multiply by 0.000001).
What is 100 square kilometres in square metres?
100 square kilometres is 100,000,000 square metres.