Select your desired geometrical figure and enter the required parameters to determine its perimeter.
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Our perimeter calculator helps you to determine the perimeter for several geometrical shapes with different parameters. Well, how to find perimeter of different shapes is no more complex with our free perimeter to area calculator.
In mathematics, the perimeter of a shape is defined as the total distance around the shape. Basically, it is the length of any shape, as long as it is expanded linearly. The range of various shapes can be the same in length according to their size.
Usually, the simplest and most straightforward method is to sum all sides of the shape. However, sometimes there are no edges (such as ellipses, circles, etc.) or one or more edges are unknown. Below are some perimeter equations used with the perimeter calculator to determine the perimeter.
A square has all sides of equal length. To calculate its perimeter, multiply the length of all these sides by 4.
Perimeter of a Square = a + a + a + a = 4a
The rectangular perimeter is the total distance around its outer boundary. It is the same as the perimeter of a square, but the difference is two pairs of equal-length sides in a rectangle.
Perimeter of a Rectangle = 2 × (Length + Width)
The perimeter of a triangle is the total length of its three sides. So, find it by adding all these sides:
Perimeter of a Triangle = a + b + c
The perimeter of a circle is called its circumference. It is essential for various practical applications.
Perimeter of a Circle = 2πr OR πd
The perimeter of a semi-circle is the sum of the curved part (half of the circle's circumference) and the straight-line diameter.
Perimeter of a semi-circle = πr + 2r
= πd / 2 + d
The perimeter of a circle sector includes the arc length and two radii that form a sector. It can be calculated by using the formula below:
Perimeter of a circle sector = r × (α + 2)
The perimeter of an ellipse is a continuous length forming a boundary of the ellipse. Unlike other shapes, there is no specific way to find the value of the perimeter of an ellipse. But it can be approximated by using Ramanujan formula:
Perimeter of an Ellipse = P ≈ π [3(a + b) - √((3a + b)(a + 3b))]
A trapezoid is a quadrilateral with one pair of parallel sides. The perimeter of an irregular trapezoid is found by adding all four side lengths.
Perimeter of a Trapezoid = a + b + c + d
Parallelogram has four sides with opposite sides that are equal in length and parallel. Its perimeter is calculated by adding the total distance around its edges.
Perimeter of a Parallelogram = a + b + a + b
= 2 (a + b)
The perimeter of a Rhombus can be calculated using the formula below:
Perimeter of a Rhombus = 4a
The perimeter of a kite is the total length of its four sides. The kite has two pairs of equal adjacent sides. The formula to find the perimeter is just to add all their sides.
Perimeter of a Kite = a + a + b + b
The perimeter of an annulus ring is the circumference of both the outer and inner circumference.
Perimeter of an Annulus (Ring) = 2π × R + 2π × r
= 2π + (R × r)
All sides of a regular polygon are equal so its perimeter is the total length of all its equal sides. Find the perimeter using this perimeter calculator or the formula below.
Perimeter = (Number of sides) x (Length of one side)
= n × a
Our online perimeter to area calculator finds the perimeter of a particular shape by following these steps:
The area is the region that is surrounding by a figure or shape, and the perimeter is the distance covered by the outer edge of the shape. The area unit is expressed in a square, and the perimeter unit is the same as the measurement unit.
The circle circumference is equal to the length of its outer boundary. It means that the circumference of a circle is equal to its perimeter. A circle is a curved shape, and its area and circumference are defined by a radius.
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