Use this free circumference calculator to find the area, circumference and diameter of a circle.

May 8, 2024 · You can find the circumference of any circle simply by using the circumference of a circle formula: C=πd (where d is the length of the diameter of the circle). In other words, circumference equals pi times diameter.

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.

Apr 21, 2025 · If you could “unwrap” a circle and lay it out flat like a straight line, the length of that line would be the circumference. 🧾 Circumference Formula. There are two main formulas, depending on what you know: If you know the radius: Circumference = 2 × π × r. Where r is the radius (half the diameter) If you know the diameter ...

In this article, we will discuss the “ Circumference of a circle ” or “Perimeter of circle” with its definition, formula, methods to find the circle’s circumference with many solved examples.

Aug 3, 2023 · There are two ways to get the circumference of a circle. The first method uses a radius of the circle, while the second one involves the diameter to calculate the circumference. But, it is important to know that both give the same result.

Find its circumference. Use [latex]\pi = 3.14[/latex]. Round your answer to the nearest tenth. This is an excellent example of a math problem that can be perfectly solved in two (2) ways. The first method is to use the standard formula of the circumference of a circle, where we need to convert the given diameter into the radius.

How to find circumference. To find the circumference of a circle, there are a few different formulas. Circumference formula. The formula for circumference is based on the constant π (pi), which is an irrational number approximately equal to 3.14159. π is the ratio of the circumference to the diameter of any circle. Circumference formula using ...

Feb 9, 2025 · Simply multiply the diameter by π to find the circumference. How can I measure the circumference of a real object? For physical objects, you can use a flexible measuring tape or a string to wrap around the object and then measure its length.