Surface area of a rectangular prism calculator

Recommended for You

Not sure where to start? These are the lessons and games we recommend most to students, parents and teachers on Basic-mathematics.com. Each lesson explains the topic in plain language, walks you through worked examples step by step, and ends with practice so you can check your understanding. Pick one below, or use the menu to find lessons on fractions, algebra, geometry, statistics and more.

This surface area of a rectangular prism calculator below is very simple to use. Just enter the length, the width, and the height of the rectangular prism. Then click on the button that says calculate.

Rectangular prism
Enter the length:        

Enter the width:         

Enter the height:       





The surface area is :  


Instructions for using the calculator

Do not enter numbers with a slash (/)! If you do, the wrong answer will be computed

Therefore, convert all fractions into decimals before entering numbers


Buy a comprehensive geometric formulas ebook. All geometric formulas are explained with well selected word problems so you can master geometry.