Find the surface area of a rectangular prism with this Rectangular Prism Surface Area Calculator.

To find the surface area, use this rectangular prism surface area
formula:

Surface Area =
[(Length x Width) + (Length x Height) + (Width x Height)] x 2

Example: The surface area of a rectangular prism with length of
3 inches, width of 4 inches, and height of 5 inches:

Surface Area = [(3 x 4) + (3 x 5) + (4 x 5)] x 2

Calculated out this gives a surface area of 94 Square Inches.