# Babylonjs sphere Diameter to Meter **URL:** \ **Category:** Questions\ **Created:** [September 12, 2022, 2:45pm UTC](https://forum.babylonjs.com/t/babylonjs-sphere-diameter-to-meter/33866 "2022-09-12T14:45:56Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![farukcelim](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/farukcelim/32/27134_2.png) [@farukcelim](https://forum.babylonjs.com/u/farukcelim)\ **Post date:** [September 12, 2022, 2:45pm UTC](https://forum.babylonjs.com/t/babylonjs-sphere-diameter-to-meter/33866/1 "2022-09-12T14:45:56Z")
Hello I created a sphere. I want to give the radius of this a value that corresponds to 50 meters in real life. How can I do that? Can you help me? [Create Sphere | Babylon.js Playground (babylonjs-playground.com)](https://www.babylonjs-playground.com/#K6M44R#2418) ---
**Author:** ![labris](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/labris/32/12576_2.png) [@labris](https://forum.babylonjs.com/u/labris)\ **Post date:** [September 12, 2022, 2:58pm UTC](https://forum.babylonjs.com/t/babylonjs-sphere-diameter-to-meter/33866/2 "2022-09-12T14:58:02Z")
Babylon size units are relative. So you can choose any scale (without too small or too big values). Making the sphere radius = 50 will work as 50 meters if all other sizes will be also relevant. ---
**Author:** ![JCPalmer](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/jcpalmer/32/42_2.png) [@JCPalmer](https://forum.babylonjs.com/u/JCPalmer)\ **Post date:** [September 12, 2022, 3:48pm UTC](https://forum.babylonjs.com/t/babylonjs-sphere-diameter-to-meter/33866/3 "2022-09-12T15:48:23Z")
The only caveat is if the scene is or might be shown in XR. XR is meter based, so that if you walk / move one meter, then objects appear in your headset correspondingly correctly. I recommend scaling everything that is practical to meters, just so no changes are required later.