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Use this free circumference calculator to find the area, circumference and diameter of a circle.
Use this calculator to easily calculate the circumference of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc. If you know the diameter, first divide it by two to get the radius.
This tool will calculate the circumference of a circle from the diameter, and will convert different measurement units for diameter and circumference.
This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.
Find the circumference of a circle given the radius, diameter, or area using our circumference calculator. Plus learn the formulas to find it.
The circumference to diameter calculator can help you solve the geometry problem of finding the diameter of a circle by inputting its circumference. This calculator works both ways, so you can also convert a diameter to a circumference.
To find the circumference of a circle, you need to know either the diameter or the radius of the circle. Then, simply plug the value into the appropriate formula mentioned above. For example, if the diameter of a circle is 10 units, the circumference can be calculated as: C = π × d. C = 3.14159 × 10. C = 31.4159 units.
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. Circle formulas and geometric shape of a circle.
In this circle calculator, you can enter the value of a circle's radius, diameter, or area, and it will calculate the circumference for you. The calculator will also show you the steps
We can calculate the diameter by multiplying the radius by 2: d = r × 2. If the circumference is known: The diameter can also be calculated using the circumference: d = c / π. If the area is known: The formula to calculate the diameter from the area of a circle is: d = 2 × √(a / π)