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  1. Circumference Calculator

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

  2. 3 Ways to Calculate the Circumference of a Circle - wikiHow

    Oct 7, 2025 · Keep reading for everything you need to know about how to figure out the circumference of a circle using either the diameter or the radius. We've even got a circumference calculator to make …

  3. Circumference of a Circle Calculator

    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 …

  4. How to Find the Circumference of a Circle in 3 Easy Steps

    May 8, 2024 · This free step-by-step guide explores what is the circumference of a circle and how to find the circumference of a circle using the circumference of a circle formula.

  5. Circumference of a Circle – Definition, Formulas, 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.

  6. Circumference Calculator - Find Circle Circumference, Radius ...

    Calculate circle circumference using C = 2πr or C = πd formula. Enter radius, diameter, circumference, or area to find all circle properties instantly. Free online geometry tool.

  7. Circumference of a Circle - Math Steps, Examples & Questions

    Here you will learn about calculating the circumference of a circle including how to calculate the circumference of a circle given the circle’s radius, diameter, or area, how to calculate the perimeter of …

  8. Circumference - Formula, Examples | Circumference of Circle

    The circumference of the circle is the length of its boundary. Explore and learn to calculate the circumference of a circle, with concepts, definitions, formulas, solved examples, and practice problems.

  9. Circumference of a Circle - Calculator, Formula & Examples | 2025

    The circumference of a circle is the distance around its edge. Calculate it instantly using our free tool with formulas C = 2πr (using radius) or C = πd (using diameter). You can also find the area of a …

  10. Circumference Calculator – Based on Radius, Diameter or ...

    To calculate the circumference of a circle using the radius, follow these steps: Step 1: Measure the radius of the circle. The radius is the distance from the center of the circle to any point on its edge. …