Rectangular Prism Calculator

Basically, a Rectangular Prism, also known as a rectangular parallelepiped or orthogonal parallelepiped, can be defined as a three-dimensional geometrical figure that consists of six faces where the opposite ones are normally equal to each other, and the angles are all right angles.

If we give more detail about the faces of the rectangular prism, then we can say that there are two equal ends, two equal sides and the top and bottom sides also equate to each other.

(A very important aspect that should be taken into account is that the calculator below only displays the top side separately, whilst the bottom is already included in the mathematical operations)

The user can easily save his or her calculations in the form of a table by simply clicking the "Add to Table" button. The process of saving is fully automatic.

The number of decimal places to which the calculations are carried out is preset to be 2, but the user can easily change that.

Rectangular Prism Calculator

Rectangular Prism Calculator

Dimensions Value Notes
Height (h) mm Vertical Height
Width (w) mm Horizontal Width
Length (l) mm Overall Length
Diagonal lengths Value Notes
Side Diagonal mm Length from top corner of one side to the bottom corner of the same side
Top Diagonal mm Length from one top corner to the opposite top corner
End Diagonal mm Length from top corner of one end to the bottom corner of the same end
Internal Diagonal mm Length from top corner of one end to the bottom corner of the other end
Surface Area and Volume Value Notes
Side Surface Area mm2 Surface Area of one Side
Top Surface Area mm2 Surface Area of the Top
End Surface Area mm2 Surface Area of one End
Total Surface Area mm2 Total Surface Area
Volume mm3 Total Volume of the Rectangular Prism

You may set the number of decimal places in the online calculator. By default there are only two decimal places.

The following algorithms are included in this calculator:

Side Surface Area = h x l

Top Surface Area = w x l

End Surface Area = h x w

Total Surface Area = 2 x ((h x w) + (h x l) + (w x l))

Volume = h x w x l

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