Convert acres to square kilometers
square kilometers = acres × 0.004047
One acre is 0.004047 square kilometers, so multiply by 0.004047 to convert. Going the other way, one square kilometer is 247.1054 acres.
Convert any value
- Square feet
- 43,560 ft²
- Acres
- 1 acre
- Hectares
- 0.404686 ha
- Square yards
- 4,840 yd²
- Square inches
- 6,272,640 in²
- Square centimeters
- 40,468,564.224 cm²
- Square kilometers
- 0.004047 km²
- Square miles
- 0.001563 mi²
Assumptions
- International foot (0.3048 m). The US survey acre differs by about 4 parts per million and is ignored.
| From | Equals |
|---|---|
| 1 square inch | 6.4516 cm² |
| 1 square foot | 144 in² = 0.092903 m² |
| 1 square yard | 9 ft² = 0.836127 m² |
| 1 acre | 43,560 ft² = 4,840 yd² = 4,046.86 m² = 0.404686 ha |
| 1 hectare | 10,000 m² = 2.47105 acres = 107,639 ft² |
| 1 square mile | 640 acres = 259 ha = 2.58999 km² |
| 1 square kilometer | 100 ha = 247.1 acres = 0.386102 mi² |
| 1 square meter | 10.7639 ft² = 1.19599 yd² |
| ft² | m² | acres | |
|---|---|---|---|
| Parking space | 180 | 17 | 0.004 |
| Studio apartment | 431 | 40 | 0.01 |
| Tennis court (doubles) | 2,808 | 261 | 0.064 |
| Average new US house (2023) | 2,497 | 232 | 0.057 |
| Basketball court (NBA) | 4,700 | 437 | 0.108 |
| Olympic swimming pool | 13,455 | 1,250 | 0.309 |
| American football field (with end zones) | 57,598 | 5,351 | 1.322 |
| Soccer pitch (FIFA standard) | 76,854 | 7,140 | 1.764 |
| City block (Manhattan, typical) | 215,278 | 20,000 | 4.942 |
acres to square kilometers table
| acres | square kilometers |
|---|---|
| 1 acre | 0.004047 square kilometers |
| 2 acres | 0.008094 square kilometers |
| 3 acres | 0.012141 square kilometers |
| 4 acres | 0.016187 square kilometers |
| 5 acres | 0.020234 square kilometers |
| 10 acres | 0.040469 square kilometers |
| 15 acres | 0.060703 square kilometers |
| 20 acres | 0.080937 square kilometers |
| 25 acres | 0.101171 square kilometers |
| 50 acres | 0.202343 square kilometers |
| 75 acres | 0.303514 square kilometers |
| 100 acres | 0.404686 square kilometers |
| 500 acres | 2.0234 square kilometers |
| 1,000 acres | 4.0469 square kilometers |
Other conversions
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Acres to Square Kilometers by CalculateItNow
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1 acre = 0.004047 square kilometers. Source: https://www.calculateitnow.dev/acres-to-sq-km