Rectangular Prism Calculator
Calculate volume, surface area, and diagonal of rectangular prisms and boxes
About this calculator
A rectangular prism calculator is an essential tool for computing the volume, surface area, and diagonal measurements of three-dimensional rectangular objects like boxes, containers, and rooms. This calculator is particularly useful for students studying geometry, architects planning spaces, engineers designing structures, and anyone working with packaging or shipping calculations. By inputting the length, width, and height dimensions, you can instantly obtain accurate measurements for construction projects, storage planning, or mathematical assignments.
How to use
Enter the length, width, and height of your rectangular prism into the designated input fields. Make sure all measurements use the same units (inches, feet, centimeters, etc.). Click the calculate button to instantly generate the volume, surface area, and diagonal measurements for your rectangular prism or box.
Frequently asked questions
What is the formula for rectangular prism volume?
Volume = length × width × height. Simply multiply all three dimensions together to get the total cubic space inside the prism.
How do you calculate the surface area of a rectangular prism?
Surface area = 2(lw + lh + wh), where l=length, w=width, h=height. This accounts for all six rectangular faces of the prism.
What is the space diagonal of a rectangular prism?
The space diagonal connects two opposite corners through the interior. It's calculated using: diagonal = √(length² + width² + height²).