When changing from square metres to acres it can be tricky to do in your head. Use our square metre to acre converter! Simple and accurate to use, try it.

With **acres** being the larger unit of surface area, **square metres** are used to calculate the area of smaller surfaces and places. Square metres will more commonly be used for indoor plots such as rooms or sports halls while acres will be used for larger quantites of land, although both units of area can be used for measuring land. Our **square metres – acres converter** is a handy tool, as are our other area converters.

## How to use the Converter for Square Metres to Acres

In the **sq m – ac calculator** above, enter in the first box the quantity of square metres you want to calculate and click “convert” for the new quantity in acres to appear. If you want to work the other way, see our tool to convert acres to square metres.

## Formula to Convert M² – Acres

When **converting sq m – ac** the mathematical formula behind the conversion is shown below. It is the same one used by our **online converters **and you can use it for manual calculations. As some examples, 12 sq m = 0.003 acres and 65 sq m = 0.065 acres

**[number of] square metres / 4,046.86 = [number of] acres **

## Unit of Square Metres

**Square metres** are a unit of area used to measure smaller places, commonly used in everyday situations and calculations. It is said that half a doorway approximately equates to one square metre and the unit is used frequently when measuring room sizes. Above you will find our **sq m to ac conversion** tool.

## Unit of Acres

The unit of area known as **acres** is one of the larger measurements and most used when it comes to measuring land. The Middle Ages introduced us to this unit when it was a measurement of land that could be ploughed in one day. An American football field is said to almost be one acre in size. Use this **square metres to acres calculator** above for any conversion.

### How many is 1 Square Metre in Acres?

**0 Acres**

`(1sq m = 0ac)`

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

**0.01 Acres**

`(25sq m = 0.01ac)`

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

**0.01 Acres**

`(50sq m = 0.01ac)`

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

**0.02 Acres**

`(100sq m = 0.02ac)`

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

**0.05 Acres**

`(200sq m = 0.05ac)`

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

**0.12 Acres**

`(500sq m = 0.12ac)`

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

**0.25 Acres**

`(1000sq m = 0.25ac)`

### How many are 2500 Square Metres in Acres?

**0.62 Acres**

`(2500sq m = 0.62ac)`

### How many are 5000 Square Metres in Acres?

**1.24 Acres**

`(5000sq m = 1.24ac)`

### How many are 10000 Square Metres in Acres?

**2.47 Acres**

`(10000sq m = 2.47ac)`

### How many are 20000 Square Metres in Acres?

**4.94 Acres**

`(20000sq m = 4.94ac)`

### How many are 40000 Square Metres in Acres?

**9.88 Acres**

`(40000sq m = 9.88ac)`

### How many are 75000 Square Metres in Acres?

**18.53 Acres**

`(75000sq m = 18.53ac)`

### How many are 100000 Square Metres in Acres?

**24.71 Acres**

`(100000sq m = 24.71ac)`