Want to change a quantity of acres into square kilometres? Use our ac to sq km converter! Simple to use, enter the numbers for a quick calculation.

**Square kilometres and acres** are both **units of area** used to measure land are larger plots, whether that be a park or building. As **square kilometres** are a bigger measurement, they will be used for much larger plots and perhaps used more frequently in construction or land deeds. Acres will be used in more everyday situations or for land sizes that are average in size. Use our **acre – sq km converter** above or have a look at the rest of our area converters.

## How to use the Converter for Acres to Square Kilometers?

Enter the quantity of acres you want to convert in our **ac to sq km calculator** above, and click “convert” for the equivalent quantity to appear in square kilometres underneath. If you need to work in the opposite direction, visit how to convert square kilometres to acres.

## Formula for Converting Ac – Sq Km

The mathematical formula for this **acre – square kilometre conversion** can be seen below and is useful if you are doing calculations by hand. It is accurate and used by our **online converter**. For instance, 8 acres = 0.0324 sq km and 24 acres = 0.097 acres.

**[number of] acres / 247.105 = [number of] square kilometres**

## Unit of Acres

The unit of area known as **acres** is most commonly used when it comes to measuring land. It is said that an American football field is almost one acre in size. The Middle Ages introduced this unit when it was used as a measure of land that could be ploughed in one day. Use this** acres to sq km calculator** above for any conversion.

## Unit of Square Kilomtres

**Square kilometres** are a **unit of area**, found when calculating the size of a park or garden. Measuring in **kilometres square** is different and refers to the length of a square-shaped area, for example if a park is 10 kilometres square, it would have an area of 100 square kilometres. Use the **converter acres to square kilometres **when changing units.

### How many is 1 Acre in Square Kilometres?

**0 Square Kilometres**

`(1ac = 0sq km)`

### How many are 2 Acres in Square Kilometres?

**0.01 Square Kilometres**

`(2ac = 0.01sq km)`

### How many are 3 Acres in Square Kilometres?

**0.01 Square Kilometres**

`(3ac = 0.01sq km)`

### How many are 4 Acres in Square Kilometres?

**0.02 Square Kilometres**

`(4ac = 0.02sq km)`

### How many are 5 Acres in Square Kilometres?

**0.02 Square Kilometres**

`(5ac = 0.02sq km)`

### How many are 10 Acres in Square Kilometres?

**0.04 Square Kilometres**

`(10ac = 0.04sq km)`

### How many are 15 Acres in Square Kilometres?

**0.06 Square Kilometres**

`(15ac = 0.06sq km)`

### How many are 20 Acres in Square Kilometres?

**0.08 Square Kilometres**

`(20ac = 0.08sq km)`

### How many are 25 Acres in Square Kilometres?

**0.1 Square Kilometres**

`(25ac = 0.1sq km)`

### How many are 30 Acres in Square Kilometres?

**0.12 Square Kilometres**

`(30ac = 0.12sq km)`

### How many are 50 Acres in Square Kilometres?

**0.2 Square Kilometres**

`(50ac = 0.2sq km)`

### How many are 100 Acres in Square Kilometres?

**0.4 Square Kilometres**

`(100ac = 0.4sq km)`

### How many are 200 Acres in Square Kilometres?

**0.81 Square Kilometres**

`(200ac = 0.81sq km)`

### How many are 500 Acres in Square Kilometres?

**2.02 Square Kilometres**

`(500ac = 2.02sq km)`

### How many are 1000 Acres in Square Kilometres?

**4.05 Square Kilometres**

`(1000ac = 4.05sq km)`