WorldDepth from Additional Render Passes is from 0-1, conversion to actual depth in meters?

Hello,

I’m currently following this tutorial that uses Movie Render Queue Additional Render Passes to render depth with MovieRenderQueue_WorldDepth as Post Process Material (depth stored in the R-channel of .exr file). When I read this .exr file and visualize the depth map, I found out that its value is float between 0 and 1, so I think it’s some form of normalized depth. How do I convert this values into the actual depth (e.g., in meters)?

Thank you so much for your help!