# Measure the circumference of an object

**URL:** <https://discourse.slicer.org/t/measure-the-circumference-of-an-object/13079>\
**Category:** Support\
**Created:** [August 18, 2020, 7:31pm UTC](https://discourse.slicer.org/t/measure-the-circumference-of-an-object/13079 "2020-08-18T19:31:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JoeCrozier](https://avatars.discourse-cdn.com/v4/letter/j/c4cdca/32.png) [@JoeCrozier](https://discourse.slicer.org/u/JoeCrozier)\
**Post date:** [August 18, 2020, 7:31pm UTC](https://discourse.slicer.org/t/measure-the-circumference-of-an-object/13079/1 "2020-08-18T19:31:04Z")

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I feel like this must be so basic of a question but I am totally drawing a blank. I know I can use the ruler to draw the difference between two points, and I know I can get volume measurements by segmenting an object … but how can I get the circumference of an object? Ideally by “drawing” in the 3d view. Any ideas?

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [August 18, 2020, 7:59pm UTC](https://discourse.slicer.org/t/measure-the-circumference-of-an-object/13079/2 "2020-08-18T19:59:55Z")

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Draw a closed curve then see its length in the Markups module. Make sure you use a recent preview version.

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/e/feffede765c01705bb6e5298639cd99516ffd405.png)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/2/c285c7ff52bda8b3ba5f8356053f2dbe38656cb1.png)