Circle Calculator & Formulas



Circle Area, Circumference & Diameter Calculation


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Result:
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Square Unit
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circle calculator - step by step calculation to find the area, circumference & diameter of a circle provided along with formulas & solved example problem, in different measurement units inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm) for the given radius value. This featured calculator brings step by step calculation for all the calculations you do by using this circle calculator. The circle formulas, solved example & step by step calculations may useful for users to understand how the input values are being used in such calculations.

Circle & its Formulas

The below mathematical formulas are used in circle calculator to find area, circumference & diameter of a circle.

formula for circle area, circumference & diameter calculation

Solved Example

The below solved example may be useful to understand how the values are being used in the mathematical formulas to find the area, circumference & diameter of a circle.

Example Problem :
Find the area, circumference & diameter of a circle having the radius of 5 cm?

Solution :
The given
radius r = 5 cm

Step by step calculation
formula to find area = π r2
substitute the values
= π x 52
= 78.5714

formula to find circumference = 2 π r
substitute the values
= 2 x π x 5
= 31.4286

formula to find diameter = 2 r substitute the values
= 2 x 5
= 10

The area, circumference & diameter of a circle may required to be calculated in different measurement unit systems, therefore this circle calculator is featured with major measurement units conversion function to find the output values in different customary units such as inches (in), feet (ft), meters (m), centimeters (cm) & millimeters (mm) by using this below conversion table.

10 mm = 1 cm
100 mm = 3.93 in
1000 mm = 3.28 ft
1000 mm = 1 m
1 cm = 10 mm
10 cm = 3.93 in
100 cm = 3.28 ft
100 cm = 1 m
1 ft = 3048 mm
1 ft = 304.8 cm
1 ft = 12 in
10 ft = 3.048 m
1 in = 25.4 mm
1 in = 2.54 cm
100 in = 8.33 ft
100 in = 2.54 m



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