Geometrie

Rectangular Prism Surface Area Calculator

Calculate the surface area of a rectangular prism instantly using our free online calculator. Enter length, width, and height for quick geometry calculations.

Surface Area Result

Surface Area (SA):
Formula Used: $$SA = 2(lw + lh + wh)$$

3D Visualization

LengthWidthHeight

Understanding Rectangular Prism Surface Area

A rectangular prism is a 3D shape with six rectangular faces. Think of it like a box. To find its surface area, you\'re essentially calculating the total area of all these faces combined.

The formula for the surface area (SA) of a rectangular prism is given by: $$SA = 2(lw + lh + wh)$$ where:

  • l is the length of the prism.
  • w is the width of the prism.
  • h is the height of the prism.

This formula adds up the areas of each pair of opposite faces: two faces with area $$lw$$, two with area $$lh$$, and two with area $$wh$$.

Use this calculator to quickly find the surface area for your geometry problems, DIY projects, or educational purposes!