# Rectangle Area and Perimeter Calculator

Welcome to our Rectangle Area and Perimeter Calculator page.

We explain how to find the area and perimeter of a rectangle and provide a quick calculator to work them out for you, step-by-step.

There are also some worked examples and links to some worksheets where you can practice this skill.

### Rectangle Area and Perimeter Calculator

Rectangle Area & Perimeter Calculator

1. Choose the length and width of the rectangle: you can choose a whole number, decimal or fraction.
• You can type a fraction by typing the numerator then '/' then the denominator.
• You can type a mixed number by typing the whole-number part, then a space then the fraction part.
• Examples: 2 1/2 (two and one-half); 3 4/5 (three and four-fifths); 7 1/3 (seven and one-third).
2. Choose your units of measurement (default is none)
3. Choose your desired accuracy (default is 2 decimal places)
4. Click the Find Area & Perimeter button
5. You will be shown the area and perimeter as a decimal (and also a fraction if you typed the length as a fraction).

### Area and Perimeter of a Rectangle Formula

The formula for the area of a rectangle is: $A = l \cdot w \;$

where l is the length and w is the width of the rectangle

The formula for the perimeter of a rectangle is: $P = 2l + 2w \;$

where l is the length and w is the width of the rectangle

### More Area & Volume Calculators

How to Print or Save these sheets

Need help with printing or saving?
Follow these 3 easy steps to get your worksheets printed out perfectly!

How to Print or Save these sheets

Need help with printing or saving?
Follow these 3 easy steps to get your worksheets printed out perfectly!

### Math Salamanders Shop

Looking for some fun printable math games?

We have some great games for you to play in our Math Games e-books!

### NEW Online Age Calculator

Do you know how old you are...in weeks? days? hours?

Are you more than a million minutes old?

Find out how old you are to the nearest second!

### NEW Fraction Calculators

We have updated and improved our fraction calculators to show you how to solve your fraction problems step-by-step!

Take a look and try them out!

### New Math Sheets & Resources

Check out our LATEST webpages.

### Some of our TOP pages!

Have a look at some of our most popular pages to see different Math activities and ideas you could use with your child

### Support Us

If you are a regular user of our site and appreciate what we do, please consider making a small donation to help us with our costs.

Get a free sample copy of our Math Salamanders Dice Games book with each donation!

### FUN Math Games

Looking for a fun and motivating way to learn and practice math skills?

Why not try one of our free printable math games with your students!