15 km² to mi² — 15 square kilometres in square miles
Exact 15 ÷ 2.589988 = 5.791532
15 square kilometres in other units
| Square millimetres | 15,000,000,000,000 | mm² |
|---|---|---|
| Square centimetres | 150,000,000,000 | cm² |
| Square metres | 15,000,000 | m² |
| Ares | 150,000 | a |
| Hectares | 1,500 | ha |
| Square inches | 23,250,046,500.09 | in² |
| Square feet | 161,458,656.25 | ft² |
| Square yards | 17,939,850.69 | yd² |
| Acres | 3,706.58 | ac |
| Square miles | 5.791532 | mi² |
km² to mi² at a glance
| Square kilometres | Square miles |
|---|---|
| 1 km² | 0.38610216 mi² |
| 2 km² | 0.77220432 mi² |
| 3 km² | 1.158306 mi² |
| 5 km² | 1.930511 mi² |
| 10 km² | 3.861022 mi² |
| 20 km² | 7.722043 mi² |
| 25 km² | 9.652554 mi² |
| 50 km² | 19.305108 mi² |
| 100 km² | 38.610216 mi² |
| 250 km² | 96.52554 mi² |
| 500 km² | 193.051079 mi² |
| 1,000 km² | 386.102159 mi² |
How to convert square kilometres to square miles
Multiply by 0.38610216 — one square kilometre is 0.38610216 square miles. 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 15 ÷ 2.589988 = 5.791532
In words: about six square miles.
Questions
How many square miles are in a square kilometre?
One square kilometre is 0.38610216 square miles. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 15 square kilometres in square miles?
15 square kilometres is 5.791532 square miles. The working is 15 ÷ 2.589988 = 5.791532.
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.