---
title: worldToMetersConversionScale
framework: modelio
role: symbol
role_heading: Instance Property
path: modelio/mdlcamera/worldtometersconversionscale
---

# worldToMetersConversionScale

The scale factor to meters from the world coordinate system containing the camera.

## Declaration

```swift
var worldToMetersConversionScale: Float { get set }
```

## Discussion

Discussion Some calculations, such as the calculation of MDLStereoscopicCamera view matrices, must occur in world space. MDLCamera properties measured in meters or millimeters use this conversion scale to perform the calculation. The default value is 1.0.

## See Also

### Managing Camera Perspective

- [projectionMatrix](modelio/mdlcamera/projectionmatrix.md)
- [projection](modelio/mdlcamera/projection.md)
- [MDLCameraProjection](modelio/mdlcameraprojection.md)
- [nearVisibilityDistance](modelio/mdlcamera/nearvisibilitydistance.md)
- [farVisibilityDistance](modelio/mdlcamera/farvisibilitydistance.md)
- [fieldOfView](modelio/mdlcamera/fieldofview.md)
- [ray(to:forViewPort:)](modelio/mdlcamera/ray(to:forviewport:).md)