# Surface area of a rectangular prism calculator

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.

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

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