Calculators

Geometry

Solid

a = side length at top of frustum
b = side length at bottom of frustum
h = height
s = slant height
V = volume
L = lateral surface area
T = top surface area
B = base surface area
A = total surface area
π = pi = 3.1415926535898
√ = square root

Calculator Use

This online calculator will calculate the various properties of a pyramidal frustum given the top and bottom side lengths and the height.

Note that frustum is often misspelled "frustrum."

Units: Note that units are shown for convenience but do not affect the calculations. The units are in place to give an indication of the order of the results such as ft, ft² or ft³. For example, if you are starting with mm and you know r and h in mm, your calculations will result with s in mm, V in mm³, L in mm², T in mm², B in mm² and A in mm².

References

Weisstein, Eric W. "Conical Frustum." From MathWorld--A Wolfram Web Resource. Conical Frustum.