Convert Square Kilometer to Acre
Use this free converter to change square kilometers (km²) into acres (ac). Square kilometer and acre both measure area. As a quick reference, 1 km² equals 247.10538 ac, and 1 ac equals 0.0040468564 km².
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Acre (ac)
247.10538
1 km² = 247.10538 ac
Area conversion table
| Square Kilometer | Acre |
|---|---|
| 0.01 | 2.4710538 |
| 0.1 | 24.710538 |
| 0.5 | 123.55269 |
| 1 | 247.10538 |
| 2 | 494.21076 |
| 3 | 741.31614 |
| 5 | 1235.5269 |
| 10 | 2471.0538 |
| 20 | 4942.1076 |
| 25 | 6177.6345 |
| 50 | 12355.269 |
| 100 | 24710.538 |
| 1,000 | 247105.38 |
How to convert Square Kilometer to Acre
Multiply the square kilometer value by 247.10538 to get acres.
- Enter the number of square kilometers you want to convert.
- The converter instantly shows the equivalent value in acres.
- Worked example: 15 km² × 247.10538 = 3706.5807 ac.
- Use the swap button to reverse the conversion (acre to square kilometer).
About these units
Square Kilometer (km²)
- Definition
- A square kilometer (km²) is the area of a square one kilometer on each side, equal to 1,000,000 square meters.
- History
- It is a metric multiple of the square meter for large areas.
- Current use
- Square kilometers measure the area of cities, regions, lakes, and countries.
Acre (ac)
- Definition
- An acre (ac) is a unit of land area equal to 43,560 square feet, or about 4,047 square meters.
- History
- Originally the area a yoke of oxen could plough in a day, it was standardised in medieval England.
- Current use
- Acres measure farmland and real-estate plots in the US and UK.
Frequently asked questions
How many acres are in a square kilometer?
There are 247.10538 ac in 1 km². To convert, multiply the number of square kilometers by 247.10538.
How do I convert square kilometers to acres?
Multiply the square kilometer value by 247.10538 to get acres. For example, 10 km² = 2471.0538 ac.
Is this square kilometer-to-acre converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Square Kilometer to other area units
| Unit | 1 Square Kilometer equals |
|---|---|
| Square Meter (m²) | 1000000 m² |
| Square Centimeter (cm²) | 10000000000 cm² |
| Square Mile (mi²) | 0.38610216 mi² |
| Square Yard (yd²) | 1195990 yd² |
| Square Foot (ft²) | 10763910 ft² |
| Square Inch (in²) | 1550003100 in² |
| Acre (ac) | 247.10538 ac |
| Hectare (ha) | 100 ha |