Surface Area Calculator

Find the surface area of a shape by entering the dimensions and selecting a unit of measurement.

Select a Shape:

Cube Surface Area Calculator

Rectangular Prism Surface Area Calculator

Sphere Surface Area Calculator

Cylinder Surface Area Calculator

Cone Surface Area Calculator

Pyramid Surface Area Calculator

Capsule Surface Area Calculator

Cap Surface Area Calculator

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How to Find the Surface Area of an Object

Surface area is the measure of the area of the surface of a 3-dimensional geometric shape or object and is measured in square units, such as square inches or feet. You can find the area of each side of an object and add them all together to find the total surface area of the object. For common shapes, find the surface area using the formulas below.

One important consideration when measuring a shape to find the surface area is to take all measurements using the same unit of measure. If your measurements are in different units, convert each measurement to the unit you want the results in. Use our length unit conversion calculators to convert your measurements to a consistent unit.

Use our area calculator to find the area of a 2-dimensional shape. Check out our volume calculator to find the volume of these geometric shapes.


Cube

cube surface area = 6e2

e = edge length

Calculate cube surface area

Diagram of a cube showing e = edge length

Rectangular Prism

prism surface area = 2lw + 2lh + 2wh

l = length
w = width
h = height

Calculate rectangular prism surface area

Diagram of a rectangular prism showing l = length, w = width, and h = height

Sphere

sphere surface area = 4πr2

r = radius

Calculate sphere surface area

Diagram of a sphere showing r = radius

Cylinder

cylinder surface area = 2πr(r + h)

base surface area = 2πr2
lateral surface area = 2πrh

r = radius
h = height

Calculate cylinder surface area

Diagram of a cylinder showing r = radius and h = height

Cone

cone surface area = πr(r + r2 + h2)

base surface area = πr2
lateral surface area = πrr2 + h2

r = radius
h = height

Calculate cone surface area

Diagram of a cone showing r = radius and h = height

Pyramid

pyramid surface area = e2 + 2e(e ÷ 2)2 + h2

base surface area = e2
lateral surface area = 2e(e ÷ 2)2 + h2

e = edge length
h = height

Calculate pyramid surface area

Diagram of a pyramid showing e = edge length and h = height

Capsule

capsule surface area = 2πr(2r + h)

end surface area = 4πr2
lateral surface area = 2πrh

r = radius
h = height

Calculate capsule surface area

Diagram of a capsule showing r = radius and h = height

Cap

cap surface area = π(r2 + h2) + πr2

base surface area = πr2
top surface area = π(r2 + h2)

r = radius
h = height

Calculate cap surface area

Diagram of a cap showing r = radius and h = height