# Surface Area of a Rectangle Calculator

This **surface area of a rectangle** calculator is the perfect tool for you to calculate the surface area of a rectangle from its **length** and **width**. In this article, we shall go over the surface area of a rectangle, its equation, how to find the surface area of a rectangle, and some frequently asked questions.

## Surface area of a rectangle equation

A rectangle is a **closed figure with four sides**, whose **opposite sides are equal**. Hence, two sides or dimensions are sufficient to describe a rectangle — its **length** (sometimes called height) and its **width** (sometimes called breadth).

The equation for the surface area of a rectangle is given by:

where:

- $\text{A}$ is the
**surface area**of the rectangle; - $\ell$ is the
**length**of the rectangle. Usually, it refers to the longest side of the rectangle. - $w$ is the
**width**of the rectangle. Usually, it refers to the shortest side of the rectangle.

The SI units for area are $\text{m}^2$ or $\text{sq m}$ (square meters), and its imperial units are $\text{ft}^2$ or $\text{sq ft}$ (square feet). Always ensure that the length and width are expressed in the same units before using the surface area formula of a rectangle.

For example, a rectangle with $5 \text{ m}$ length and $2 \text{ m}$ breadth (or width) would have a surface area of $5 \times 2 = 10 \text{ m}^2$.

🔎 Since a rectangle is a 2D geometry, it is sufficient to refer to its surface area as area.

## How to find the surface area of a rectangle?

To find the surface area of a rectangle, you require its **length** and **width**:

**Convert**the**length**and**width**into the**same unit**. We must measure them both in the same unit. For example, if the length is`5 m`

, and width is`2 ft`

, convert both to either`m`

or`ft`

.**Multiply**this length and width to obtain the area in corresponding units.- Double-check your answer using the surface area of a rectangle calculator.

## How do I use this surface area of a rectangle calculator?

This surface area of a rectangle calculator is simple to use:

**Enter the length**of the rectangle in its appropriate field. Ensure you've picked the suitable units.**Enter the width**(or breadth) of the rectangle in its appropriate field. Again, ensure that you've picked the correct units.- This surface area of a rectangle will automatically find the surface area of the rectangle and display the result in the appropriate field.

So now you know how to find the area of a rectangle!

## Other rectangle calculators

If you're in need for calculating other rectangle related parameters, use our collection below:

- Area of a rectangle calculator
- Dimensions of a rectangle calculator
- Diagonal of a rectangle calculator
- Rectangle diagonal angle calculator
- Perimeter of a rectangle
- Length of a rectangle calculator
- Width of a rectangle calculator
- Length and width of rectangle given area calculator
- Length and width of rectangle given perimeter calculator
- Perimeter of a rectangle with given area
- Rectangle scale factor calculator
- Square feet of a rectangle calculator
- Golden rectangle calculator

## FAQ

### How do I calculate the area of my monitor screen?

Most monitor screens are rectangular in shape. To calculate the area of your monitor screen, follow these simple steps:

**Measure**the**length**and**width**of your monitor with a monitor or measuring scale. Alternatively, you can get these dimensions from the product description.**Multiply**the length and width together to obtain the surface area of your monitor screen.- Rejoice in your newfound knowledge of your screen's area.

### How many acres to one hectare?

There are **2.471 acres to one hectare**. An acre is a unit of land and is roughly equal to `4047 sq m`

. A hectare is a unit of land equal to `10,000 sq m`

.