# What are the units of distance between any two points?

**URL:** <https://discourse.slicer.org/t/what-are-the-units-of-distance-between-any-two-points/24853>\
**Category:** Support\
**Created:** [August 21, 2022, 8:32pm UTC](https://discourse.slicer.org/t/what-are-the-units-of-distance-between-any-two-points/24853 "2022-08-21T20:32:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jsalas424](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@jsalas424](https://discourse.slicer.org/u/jsalas424)\
**Post date:** [August 21, 2022, 8:32pm UTC](https://discourse.slicer.org/t/what-are-the-units-of-distance-between-any-two-points/24853/1 "2022-08-21T20:32:51Z")

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Clarifying question:

If I calculate the euclidean distance between any two x,y,z point using data exported from a slicer mesh, what are the units?

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [August 21, 2022, 8:52pm UTC](https://discourse.slicer.org/t/what-are-the-units-of-distance-between-any-two-points/24853/2 "2022-08-21T20:52:12Z")

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We use millimeters by default.