100 km² to ha — 100 square kilometres in hectares
Exact 100 × 100 = 10,000
100 square kilometres in other units
| Square millimetres | 100,000,000,000,000 | mm² |
|---|---|---|
| Square centimetres | 1,000,000,000,000 | cm² |
| Square metres | 100,000,000 | m² |
| Ares | 1,000,000 | a |
| Hectares | 10,000 | ha |
| Square inches | 155,000,310,000.62 | in² |
| Square feet | 1,076,391,041.67 | ft² |
| Square yards | 119,599,004.63 | yd² |
| Acres | 24,710.54 | ac |
| Square miles | 38.610216 | mi² |
km² to ha at a glance
| Square kilometres | Hectares |
|---|---|
| 1 km² | 100 ha |
| 2 km² | 200 ha |
| 3 km² | 300 ha |
| 5 km² | 500 ha |
| 10 km² | 1,000 ha |
| 20 km² | 2,000 ha |
| 25 km² | 2,500 ha |
| 50 km² | 5,000 ha |
| 100 km² | 10,000 ha |
| 250 km² | 25,000 ha |
| 500 km² | 50,000 ha |
| 1,000 km² | 100,000 ha |
How to convert square kilometres to hectares
Multiply by 100 — one square kilometre is 100 hectares. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 100 × 100 = 10,000
In words: ten thousand hectares.
What these units are
The square kilometre and the hectare are covered in the area unit guide, along with every other unit on this page.
Questions
How many hectares are in a square kilometre?
One square kilometre is 100 hectares. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 100 square kilometres in hectares?
100 square kilometres is 10,000 hectares. The working is 100 × 100 = 10,000.
How big is an acre, really?
About 4,047 square metres, or roughly 70 by 58 metres if it were square — though it rarely is. The traditional definition was one chain by one furlong, the strip a team of oxen could plough in a day, which is why it is a long thin shape rather than a round number.
How many acres in a hectare?
A hectare is about 2.47 acres. The hectare is the tidier unit: it is exactly 10,000 square metres, or a square 100 metres on each side. Most of the world quotes land in hectares and only the English-speaking countries still lean on the acre.
Why isn't a square foot 12 square inches?
Because area scales with the square of length. A foot is 12 inches, so a square foot is 12 × 12 = 144 square inches. The same catch doubles again for volume, where a cubic foot is 1,728 cubic inches.
What area is a football pitch?
There is no single answer, which is why it is a poor unit despite being a popular one. FIFA allows pitches between roughly 4,050 and 10,800 square metres, so "the size of a football pitch" can vary by a factor of more than two.