circumference calculator (2023)

If you need to solve some geometry exercises, this circumference calculator is the right page for you. It is a tool created specifically to find the diameter, circumference and area of ​​any circle. Read to learn:

• What is the definition of circumference?
• How to find the circumference of a circle.
• How to convert circumference to diameter

As with all our tools, the circumference calculator works in all directions; It is also a circumference to diameter calculator and can be used to convert circumference to radius, circumference to area, radius to circumference, radius to diameter (duh!), radius to area, diameter to circumference, diameter to radius (yes, again with rocket science), diameter to area, area to circumference, area to diameter, or area to radius.

If you want to draw a circle on the cartesian plane you can find thisequation of a circular calculatoruseful.

The circumference of a circle is the linear distance from the edge of a circle. It is the same as the perimeter of a geometric figure, but the term 'perimeter' is used exclusively for polygons.

The circumference is often incorrectly written ascircumference.

The following equation describes the relationship between circumference and radius.Rof a circle:

C = 2πR

Where π is a constant approximately equal to 3.14159265...

An equally simple formula determines the ratio of the area of ​​acircleand its radius:

A = π * R²

1. Determine the radius of a circle. Assume it equals 14 cm.
2. Substitute this value for the circumference formula:C = 2 * π * R = 2 * π * 14 = 87,9646 cm.
3. You can also use it to find the area of ​​a circle:A = π * R² = π * 14² = 615.752 cm².
4. Finally, you can find the diameter, it's simply twice the radius:D = 2 * R = 2 * 14 = 28 cm.
5. Use our circumference calculator to find the radius when you only have the circumference or area of ​​a circle.

Circumference calculation is important for determining hoop stress in any rotationally symmetric object. Learn more with ourrim tension calculator.

You've probably noticed that since the diameter is twice the radius, the ratio of the circumference to the diameter equals π:

C/D = 2πR / 2R = π

This ratio (circumference to diameter) is the definition of the constant pi. It is used in many areas such as physics and mathematics. For example, you can find it atcentrifugal force calculator.

🔎 If you are interested in the relationship between circumference and other variables, you can take a look at ourcircumference to diameterycircumference and area of ​​a circlecalculators

To calculate the circumference, youI need the radius of the circle:

1. Multiplythe radius times 2 to get the diameter.
2. Multiplythe result times π, or 3.14 for an estimate.
3. That's it; you found thecircle circumference.

or you can usethe diameter of the circle:

1. Multiplyel diameter by π, or 3.14.
2. The result is thecircle circumference.

If you wantfind the diameter of the circumference of a circle, Follow these steps:

1. Sharecircumference times π, or 3.14 for an estimate.
2. And that is;Do you have the diameter of the circle?.

ANfind the area of ​​a circle from the circumference, Follow these steps:

1. Sharethe circumference by π
2. Sharethe result times 2 to get thecircle radius.
3. Multiplythe radius by itself to get your square.
4. Multiplysquared by π, or 3.14 for an estimate.
5. you found thecircle area from circumference.

ANfind the radius of the circumference of a circle, you must do the following:

1. Sharecircumference times π, or 3.14 for an estimate. The result is the diameter of the circle.
2. Sharethe diameter by 2.
3. Here it is,Did you find the radius of the circle?.

• Calculate the circumference as2 ⨉ radio ⨉ p.
• Calculate the circumference asdiameter ⨉ π.
• wrap arope around objectand measure its length.
• Useomni circumference calculator.

Himcircumference formula, if the radius of the circle is given, it is:

• 2 ⨉ radio ⨉ p

Or if the circumference of the circle is given:

• Circumference ⨉ π

You can estimate π as 3.14.

ANCalculate the circumference of a circle with a radius of 1 meter, just follow these steps:

1. Multiplythe radius times 2 to get the diameter of 2 meters.
2. Multiplythe result times π, or 3.14 for an estimate.
3. And there you go; TheThe circumference of a circle with a radius of 1 meter is 6.28 meters.

ANfind the circumference of a cylinder, you should keep in mind that the cross section of a cylinder is a circle. If you know the radius of the cylinder:

1. Multiplythe radius times 2 to get the diameter.
2. Multiplythe result times π, or 3.14 for an estimate.
3. That's it; you found thecylinder circumference.

or you can usethe diameter of the cylinder:

1. Multiplyel diameter by π, or 3.14.
2. The result is thecylinder circumference.

If you wantfind the area of ​​a circle with a circumference of 1 meter, do the following:

1. Sharethe circumference by π. This is himcircle diameter, in this case, 31.8 centimeters.
2. Shareby 2. This result is thecircle radiusof 15.9 centimeters.
3. Multiplythe radius with itself, obtaining the square, in our case 256 cm².
4. Multiplytimes π, or 3.14 for an estimate.
5. That's it;A circle with a circumference of 1 meter has an area of ​​795.78 cm².

ANfind the radius of a circle with a circumference of 10 centimeters, you must do the following:

1. Sharecircumference times π, or 3.14 for an estimate. The result is the diameter of the circle, 3.18 centimeters.
2. Sharethe diameter by 2.
3. and there you goThe radius of a circle with a circumference of 10 centimeters is 1.59 centimeters..