Search results
This tool will calculate the diameter of a circle from the radius, and will convert different measurement units for radius and diameter. Formula. The formula used to calculate circle diameter is: ø = 2 · r. Symbols. ø = Circle diameter; r = Circle radius; Radius of Circle. Enter the radius of a circle. The radius is the distance between the ...
Jun 16, 2024 · Quickly convert between diameter and radius with our handy diameter to radius calculator.
Jun 26, 2024 · To calculate the radius of a circle, divide its circumference by 2π; for the circle's diameter, divide the circumference by π. Let's say that the circumference of a given circle is 20 inches. Therefore, its radius is 3.18 in, and its diameter is 6.37 in.
This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.
Jul 1, 2024 · The radius of a circle from the area: if you know the area A, the radius is r = √(A / π). The radius of a circle from circumference: if you know the circumference c, the radius is r = c / (2 × π). The radius of a circle from diameter: if you know the diameter d, the radius is r = d / 2.
Another formula to find the circumference is if you have the diameter you divide the diameter by 2 and you get the radius. Once you have the radius you times the radius by 2 and times it by pie and then you get the circumference. Here are the two different formulas for finding the circumference: C = πd C = 2πr
The circle calculator is an online geometry calculator that you can use to find any of the following characteristics of a circle: radius, diameter, circumference, or area. The circle calculator takes one of the above characteristics as an input and calculates the other three characteristics.
How to Calculate the Radius Given the Diameter. The diameter of a circle is equal to twice the length of the radius. So, you can use the following formula to calculate the radius when given the diameter: r = d/2. Thus, the radius of a circle r is equal to the diameter d divided by 2.
Just enter either the radius, diameter or circumference, and our calculator will do the rest - no need to click enter, it just updates automatically to show the correct answer. You can also change the unit of measure at the bottom
Feb 6, 2024 · Calculate the area, circumference, radius and diameter of circles. Find A, C, r and d of a circle. Given any 1 known variable of a circle, calculate the other 3 unknowns.
