# Square Kilometers - Acres Converter

Convert between square kilometers and acres (km2 and ac) using this area conversion tool. This converter is part of the full area converter.
Simply choose whether you want to convert **square kilometers to acres** or **acres to square kilometers**, enter a value and click the 'convert' button.
Reference charts are available down the page.

#### Disclaimer

Whilst every effort has been made in building this square kilometers - acres converter, we are not to be held liable for any special, incidental, indirect or consequential damages or monetary losses of any kind arising out of or in connection with the use of the converter tools and information derived from the web site. This square kilometers - acres converter is here purely as a service to you, please use it at your own risk. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate conversions.

Please see the full disclaimer for more information.

## Converting acres and square kilometers

Some commonly asked questions are included below, as well as a reference chart. When making manual conversions, you can use the converter at the top of this page to check your answer.

### How many square kilometers are there in 1 acre?

There are 0.0040468564224 square kilometers in 1 acre. To convert from acres to square kilometers, multiply your figure by 0.0040468564224 (or divide by 247.10538146717) .

### How many acres are there in 1 square kilometer?

There are 247.10538146717 acres in 1 square kilometer. To convert from square kilometers to acres, multiply your figure by 247.10538146717 (or divide by 0.0040468564224) .

In the chart below, figures are rounded to a maximum of 4 decimal places (6 with smaller numbers) to give approximations.

Acres | Square Kilometers | Square Kilometers | Acres |
---|---|---|---|

0.1 | 0.0004 | 0.1 | 24.7105 |

1 | 0.004 | 1 | 247.1054 |

2 | 0.0081 | 2 | 494.2108 |

3 | 0.0121 | 3 | 741.3161 |

4 | 0.0162 | 4 | 988.4215 |

5 | 0.0202 | 5 | 1235.5269 |

6 | 0.0243 | 6 | 1482.6323 |

7 | 0.0283 | 7 | 1729.7377 |

8 | 0.0324 | 8 | 1976.8431 |

9 | 0.0364 | 9 | 2223.9484 |

10 | 0.0405 | 10 | 2471.0538 |

20 | 0.0809 | 20 | 4942.1076 |

30 | 0.1214 | 30 | 7413.1614 |

40 | 0.1619 | 40 | 9884.2153 |

50 | 0.2023 | 50 | 12355.2691 |

60 | 0.2428 | 60 | 14826.3229 |

70 | 0.2833 | 70 | 17297.3767 |

80 | 0.3237 | 80 | 19768.4305 |

90 | 0.3642 | 90 | 22239.4843 |

100 | 0.4047 | 100 | 24710.5381 |

### What is an acre?

The **acre** is a unit of land commonly employed within North America and the Caribbean. It is equal to 4,047 square metres or 43,560 square feet. This measurement is roughly equivalent to 40 per cent of a hectare. Interestingly enough, the acre can trace its roots back to mediaeval times. It was defined as the area that could be ploughed in a single day with the help of an ox. One acre is approximately 76 per cent the size of a football field. Many suburban lots are between one-quarter and one-fifth of an acre in size. You can find out more about acres in the article, how big is an acre?

### What is a square kilometer?

One kilometer (or 'kilometre' with British spelling) is equivalent to 1,000 meters. Therefore, a **square kilometer** can be expressed as one million square meters. This unit of distance and area can be used within landscaping, surveying and aerial photography. One square kilometer is also equal to 100 hectares. The city of Chester in the United Kingdom is roughly one square kilometer in size. The Manchester Golf Club is likewise one square kilometer in total.

### Other individual area converters

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