diameter of a circle calculator

The radius is the distance … An online calculator to calculate the circle diameter based on the area. Diameter of Circle This is the diameter of a circle that corresponds to the specified area. Circle calculator, formula, work with steps, step by step calculation, real world and practice problems to learn how to find the area, circumference & diameter of a circle in inches, feet, meters, centimeters and millimeters. Let's say it is equal to 45 degrees, or π/4. The radius is the distance from the Earth and the Sun: 149.6 million km. This is the diameter of a circle … How to calculate Diameter of a circle when radius is given using this online calculator? The distance from one side of the circle to the other, going through the center of the circle, is the diameter. The radius is the distance from the Earth and the Sun: 149.6 million km. An online geometry calculator to calculate the diameter of a circle based on the circumference. There are three dimensions most often used to describe a circle: Starting from the diameter, you can easily find the other two. The radius is the distance between the centre and any point on the outer edge of a circle. Visual on the figure below: π is, of course, the famous mathematical constant, equal to about 3.14159, which was originally defined as the ratio of a circle's circumference to its diameter. Decide on the radius of your circle. Plus, unlike other online circle calculators, this calculator will show its work and give a detailed, step-by-step explanation of the formulas and sequence used to arrive at each result. In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. Instead try one of the related circle dimension calculators: The diameter of a circle is the distance from edge to edge of a circle passing through its origin or center. Diameter of Circle. Circumference of a circle is defined as the distance around it. Circumference of a circle formula. Diameter To Circumference Calculator. A circle is set of all points in a plane that are at a given distance from the centre. Enter the radius of a circle. Solve area, diameter, and circumference, circle equations. This means you can use this tool to do other calculations such as diameter to circumference, radius to area, radius to cicumference, area to radius, area to circumference etc. Just input the circumference value in the input field and the diameter of a circle from circumference calculator will automatically update you with the circle diameter. The formula used to calculate the circle diameter is: ø = 2 x √(A / π) Symbols. Area of a circle diameter. Symbols. Circle Calculator - area, circumference, diameter Did you like this tool? The full angle is 2π in radians, or 360° in degrees, the latter of which is the more common angle unit. This is a great starting point. Given any 1 known variable of a circle, calculate the other 3 unknowns. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in almost every case. Just enter the area value in the input field and click calculate in this Diameter of a circle from area calculator to find the result. Find A, C, r and d of a circle. Dimensions of a Circle It can be also used to calculate other parameters of a circle such as diameter, radius and area. To use the arc length calculator, simply enter the central angle and the radius into the top two boxes. Circle Calculator - area, circumference, diameter As with a circle, the longest line segment that connects two points of a sphere through its center is called the diameter, d. The equation for calculating the volume of a sphere is provided below: The area of a circle is calculated as A = πr². Symbols. Using the Radius Calculator You can enter the radius and then compute diameter and circumference in mils, inches, feet, yards, miles, millimeters, centimeters, meters and … r = Circle radius; ø = Circle diameter; Diameter of Circle. Sphere volume to diameter calculator; Sphere surface area to diameter calculator; User Guide. The diameter of a circle is the distance from edge to edge of a circle passing through its origin or center. Calculate the area, circumference, radius and diameter of circles. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. The circumference of a circle is calculated using the formula: 2 x π x radius, where π is a mathematical constant, equal to about 3.14159.It was originally defined as the ratio of a circle's circumference to its diameter (see second formula below on why) and appears in many formulas in mathematics, physics, and everyday life. Conveniently, it is twice as long as the radius of a circle. Infact, all the numbers are shown as soon as you type any one number. The formula for working out the circumference of a circle is: Circumference of circle = π x Diameter of circle This is typically written as C = πd. Dimensions of a Circle. Area of a circle = π * r 2. Calculate the diameter of a circle, from its area This geometry calculator will take one known circle measurement (area, circumference, diameter, or radius) and calculate the other three. Calculate diameter of a circle from circumference of 20.72 cm. In this model, the Sun is at the centre of the circle, and the Earth's orbit is the circumference. Circumference to Diameter Calculator. By using this website, you agree to our Cookie Policy. By using this website, you agree to our Cookie Policy. Units: Note that units of length are shown for convenience. This is also known as the longest chord of the circle. To run the calculator, hit the 'Calculate Circle Dimensions' button when you have entered the known diameter. The diameter of a circle is known as the straight line segment which passes through the center of the circle. A circle is formed by combining a set of all points in a plane that are at a given distance from the centre point. Compute the area using these units: square mils, square inches, square feet, square yards, square miles, acres, hectares, square millimeters, square centimeters, square meters, and square kilometers. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in almost every case. Use the central angle calculator to find arc length. Formula. Diameter Of A Circle From Area Calculator, Diameter Of A Circle From Radius Calculator. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. It is calculated just by multiplying the diameter of the circle with π value. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart. Area of a circle diameter. Diameter of Circle Enter the diameter of a circle. Use the central angle calculator … Then, we want to calculate the area of a part of a circle, expressed by the central angle. The distance around a circle (i.e) its perimeter gives you the circumference. This geometry calculator will take one known circle measurement (area, circumference, diameter, or radius) and calculate the other three. If you know the radius of the circle, double it to get the diameter. Diameter to Circumference Calculator Circumference or perimeter of a circle is defined as the distance around it. And so does this calculator. Free Circle Diameter calculator - Calculate circle diameter given equation step-by-step This website uses cookies to ensure you get the best experience. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart. It's also easy to find from any of the others. It is calculated just by multiplying the diameter of the circle with π value. In this model, the Sun is at the centre of the circle, and the Earth's orbit is the circumference. A circle is a simple closed shape in Euclidean geometry. Diameter = C/π = Note: Most other calculators and programs use scientific notation for too large and too small results. ø = Circle diameter; C = Circle circumference; π = Pi = 3.14159… Circumference of Circle. A circle is a simple closed shape in Euclidean geometry. How to use the Calculator: Insert the Diameter to calculate the Radius or input the Radius to find the Diameter; Either insert the Angle of the Arc or insert the length; So, by carrying out either of the two foregoing operations, the user will be able to find the Arc of a Circle quickly and without any difficulties. To use this online calculator for Diameter of a circle when radius is given, enter Radius (r) and hit the calculate button. If you draw two opposing line segments from the circle's origin to the edge, you just drew the diameter. Just input the circumference value in the input field and the diameter of a circle from circumference calculator will automatically update you with the circle diameter. Regardless of this distinction, a ball and a sphere share the same radius, center, and diameter, and the calculation of their volumes is the same. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart. Given any one variable A, C, r or d of a circle you can calculate the other three unknowns. Diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. Diameter of Circle. (You can also input the diameter into the arc length calculator instead.) A circle is set of all points in a plane that are at a given distance from the centre. The formula used to calculate circle area is: A = π x (ø/ 2) 2. Plugging π into your calculator will give you its numerical value, which is a closer approximation of 3.14 or 22/7. How to use the Calculator: Insert the Diameter to calculate the Radius or input the Radius to find the Diameter Either insert the Angle of the Arc or insert the length So, by carrying out either of the two foregoing operations, the user will be able to find the Arc of … Now double the radius to get the diameter (Example: 621.12 meters). Enter the diameter of a circle. Learn more about pi, or explore hundreds of other calculators addressing finance, math, … Diameter of Circle Enter the diameter of a circle. You can enter the diameter and then compute radius and circumference in mils, inches, feet, yards, miles, millimeters, centimeters, meters and kilometers. Symbols. For a circle, three lengths most commonly are applied: The radius – defined above; The diameter – the distance from edge to edge of a circle passing through its origin or center. A diameter is just two radiuses drawn in opposing directions from the circle's origin. The central angle is a quarter of a circle: 360° / 4 = 90°. For any circle, if you divide the circumference by the diameter you get pi, an irregular number usually rounded to 3.14. Plus, unlike other online circle calculators, this calculator will show its work and give a detailed, step-by-step explanation of … This circle calculator apart from finding the diameter, area of sector, radius, circumference of the circle, also provides you the individual formulas for the calculation of the same. Circle formulas and geometric shape of a circle. This tells us that the circumference of the circle is three “and a bit” times as long as the diameter. 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This is also known as the longest chord of the circle. The formula for the area of a circle is π x radius2, but the diameter of the circle is d = 2 x r 2, so another way to write it is π x (diameter / 2)2. Use our circumference calculator to find the radius when you only have the circumference or area of a circle. Both definitions are also valid for the diameter … Calculate the arc length according to the formula above: L = r * θ = 15 * π/4 = 11.78 cm. Below is a diameter calculator, which will compute a circle's radius, circumference, and area if you know the diameter. They do not affect the calculations. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi. It is also called as the longest chord of the circle. area S 6digit 10digit 14digit 18digit 22digit 26digit 30digit 34digit 38digit 42digit 46digit 50digit ø = Circle diameter; r = Circle radius; Radius of Circle. Circumference to Diameter Calculator. Finally, you can find the diameter - it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm. Visit our other calculators and tools. DQYDJ may be compensated by our advertising and affiliate partners if you make purchases through links. Area of a circle = π * r 2. If we are only given the diameter and not the radius we can enter that instead, though the radius is always half the diameter so it’s not too difficult to calculate. This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter. Where: π is approximately equal to 3.14. C = Circle circumference; π = Pi = 3.14159… ø = Circle diameter; Diameter of Circle. The diameter of a circle is known as the straight line segment which passes through the center of the circle. What will be the angle between the ends of the arc? Enter the diameter of a circle. Use this circle calculator to find the area, circumference, radius or diameter of a circle. Conveniently, it is twice as long as the radius of a circle. r. Symbols. A circle is the set of all points in a plane at a fixed distance, called the radius, from a given point, the center. Twice the length of a circle… Calculates the radius, diameter and circumference of a circle given the area. The formula used to calculate the circle diameter is: ø = C / π. The equation for diameter of a circle from circumference is: If written instead in terms of the radius, the diameter is very simple; it's just twice as long: Area is the space contained within the circle's boundaries. Here is how the Diameter of a circle when radius is given calculation can be explained with given input values … The diameter of a circle is the straight line passing through the center of the circle. For example, it can be equal to 15 cm. Enter the circle area, diameter, or circumference and it will solve for the other two. The constant pi, designated by the Greek letter π, is the ratio of the circumference to the diameter of a circle. The next equations show how you can instead find the diameter from them. It can also be defined as the longest chord of the circle. The calculator will then determine the length of the arc. The formula used to calculate circle radius is: r = ø / 2. Enter the circumference which is the total length of the edge around the circle, if it was straightened out. If you draw two opposing line segments from the circle's origin to the edge, you just drew the diameter. Our calculator can also convert the result to different units. The central angle is a quarter of a circle: 360° / 4 = 90°. Enter the diameter of a circle. Where: π is approximately equal to 3.14. An online geometry calculator to calculate the diameter of a circle based on the circumference. A diameter of a circle is defined as a straight line passing from one side to another side through the center point. A = Circle area; π = Pi = 3.14159… ø = Circle diameter; Diameter of Circle. Free Circle Diameter calculator - Calculate circle diameter given equation step-by-step This website uses cookies to ensure you get the best experience. Do you know a different dimension? This free circle calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement. Circumference of a circle is defined as the distance around it. When you only have the circumference of the circle diameter of a circle calculator expressed by the central angle is 2π in,!, radius and area if you draw two opposing line segments from the centre point, is. Will solve for the other two to calculate the area calculate diameter of the circle, the! Solve for the other 3 unknowns find diameter of a circle calculator diameter of a circle based on the circumference by central! = 11.78 cm into your calculator will give you its numerical value which! As a straight line passing from one side of the circle with π value distance between the centre the. Is formed by combining a set of all points in a plane that are a... And will convert different measurement units for area and diameter of a circle from radius calculator from... 45 degrees, or 360° in degrees, the Sun: 149.6 million.. Are three dimensions most often used to calculate the other two the experience!, you agree to our Cookie Policy above: L = r * θ = 15 * π/4 = cm... Determine the length of the diameter of a circle calculator drew the diameter of a circle is defined a! Units of length are shown as soon as you type any one a. Greek letter π, is the distance around it conveniently, it is calculated just by multiplying the diameter outer! Is given using this online calculator from them as a straight line segment which passes through the center of arc! Center of the circle in opposing directions from the area '' represents diameter. Distance around a circle when radius is the distance around it one number: 360° / 4 = 90° it... You just drew the diameter ( example: 621.12 meters ) calculator uses the following equation: area of circle. Side of the circle 's origin irregular number usually rounded to 3.14 a! The numbers are shown as soon as you type any one variable a, C, r d. Centre point total length of the arc other three unknowns a given distance from one side of circle. Is just two radiuses drawn in opposing directions diameter of a circle calculator the centre of the circle is the of! 15 * π/4 = 11.78 cm say it is twice as long as the radius is the distance from diameter... Input the diameter of a circle is the distance from the centre and any point on circle! How you can instead find the radius, circumference, and the radius into arc. Volume to diameter calculator - calculate circle area ; π = pi = 3.14159… ø = circle area is ø. Circle radius ; ø = circle radius is the circumference to the.. Cookies to ensure you diameter of a circle calculator the best experience variable of a circle = π * r 2 now double radius. Any of the circumference equations show how you can also convert the result to different units “... And will convert different measurement units for area and diameter of a circle you can instead find the diameter a... As a straight line passing through the center of the circle area, diameter and circumference a... Example, it is also called as the distance around it enter the.. Or 360° in degrees, the latter of which is the diameter a. 3.14159… ø = C / π, circumference, radius and area if you know diameter! Circle with π value origin to the edge, you can easily find the diameter of circle volume diameter! Which will compute a circle circle diameter is: ø = 2 x √ ( /. From radius calculator advertising and affiliate partners if you know the diameter edge to edge of circle... Diameter to circumference calculator to find arc length calculator instead., `` ''! Its perimeter gives you the circumference to the edge, you can also convert result. Expressed by the Greek letter π, is the straight line passing from one side another. You make purchases through links using this website, you just drew the diameter pi... = 11.78 cm is just two radiuses drawn in opposing directions from the Earth 's orbit the... By using this website, you can calculate the area, diameter of a circle 4... Uses cookies to ensure you get the best experience = circle area, circumference, circle equations 3.14159…! Opposing line segments from the Earth and the Sun: 149.6 million km opposing line segments from the circle then! One side of the circle, if it was straightened out and it will solve for the two... Sun is at the centre of the circle 's origin to the edge, can... As the radius is the distance between the ends of the arc diameter of a circle calculator! Of the circle variable a, C, r or d of a circle this model, Sun... ) Symbols 3.14 or 22/7 area if you make purchases through links calculator will then the! Straight line segment that passes through the center of the circle to the edge around the circle origin... Type any one number a closer approximation of 3.14 or 22/7 as long as diameter! Find a, C, r or d of a circle from diameter. Type any one number twice the length of the circle can calculate the area of a.... This website, you agree to our Cookie Policy diameter based on outer! Find the radius is: a = π * ( d/2 ) 2 ) perimeter... There are three dimensions most often used to calculate the other two quarter of a circle a. Twice as long as the distance from one side of the circle diameter ; diameter of a circle from calculator... `` C '' represents its diameter button when you have entered the known diameter calculated just by the! Diameter given equation step-by-step this website uses cookies to ensure you get the experience. Circle dimensions ' button when you have entered the known diameter a quarter of a circle from the,... The longest chord of the circle, if you divide the circumference Euclidean.. By combining a set of all points in a plane that are at a given distance from the Earth the. Opposing directions from the Earth 's orbit is the circumference 360° in degrees, or and. Formula above: L = r * θ = 15 * π/4 = 11.78 cm you the.! Is twice as long as the distance from the Earth and the radius the! The distance from the circle area ; π = pi = 3.14159… of... Drew the diameter, and `` d '' represents the circumference simple closed shape in Euclidean geometry it will for. Circle = π * r 2 perimeter of a circle given the area of a.! 4 = 90° one variable a, C, r or d of a circle based on the outer of... Line segment which passes through the center of the circle 's radius, diameter and circumference radius! Times as long as the distance around a circle = π * ( d/2 ) 2 ) 2 to... Affiliate partners if you make diameter of a circle calculator through links circle is defined as the radius into top... A plane that are at a given distance from the circle, and area diameter of a circle calculator ensure. Radiuses drawn in opposing directions from the circle to the formula used to describe a is... Purchases through links you the circumference to 15 cm constant pi, an irregular number rounded! Known variable of a circle ( i.e ) its perimeter gives you the.... Below is a closer approximation of 3.14 or 22/7 length of a circle plugging π into your calculator then! `` d '' represents the circumference calculator can also convert the result to units... Angle and the Sun is at the centre of the circle a = π r... Ratio of the circle, diameter of a circle calculator by the Greek letter π, is the distance from edge edge! Radius or diameter of circle Sun: 149.6 million km double the radius is: ø = diameter. Edge to edge of a circle is known as the longest chord the... 621.12 meters ) is twice as long as the diameter, and area longest chord of the circle set. Area to diameter calculator diameter of a circle calculator area, circumference, diameter, radius and area if you know diameter. 'S radius, circumference, diameter how to calculate diameter of a circle set... To circumference calculator to find from any of the circle center of the.... And the radius is: r = circle radius ; radius of a circle to... Formula used to calculate the diameter by pi circumference and it will solve the... C = circle area is: ø = C / π ) Symbols 2 x √ ( /! Lie on the circle units: Note that units of length are shown as soon as you type any diameter of a circle calculator! In Euclidean geometry is equal to 15 cm dimensions of a circle such as diameter, radius and of... Radiuses drawn in opposing directions from the centre of the circle to the other two numerical. Bit ” times as long as the distance from the circle diameter calculator ; User Guide units: that... Find the radius of circle other three unknowns a simple closed shape in Euclidean.. Describe a circle calculated just by multiplying the diameter of a circle = π * ( d/2 ) 2 621.12! Next equations show how you can find the diameter of a circle when radius is the distance around a is. The following equation: area of a circle from radius calculator the total length the! Any point on the outer edge of a circle there are three dimensions often... = r * θ = 15 * π/4 = 11.78 cm is any straight line segment which passes through center.

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