files/en-us/web/api/xrdepthinformation/rawvaluetometers/index.md
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The read-only rawValueToMeters property of the {{DOMxRef("XRDepthInformation")}} interface contains the scale factor by which the raw depth values must be multiplied in order to get the depths in meters.
For CPU depth information, see also the {{domxref("XRCPUDepthInformation.getDepthInMeters()")}} method.
A number.
Use {{domxref("XRFrame.getDepthInformation()")}} (CPU) or {{domxref("XRWebGLBinding.getDepthInformation()")}} (WebGL) to obtain depth information. The returned objects will contain the rawValueToMeters scale factor, which can be used for further calculations.
For CPU depth information and a buffer that has "luminance-alpha" format:
const uint16 = new Uint16Array(depthInfo.data);
const index = column + row * depthInfo.width;
const depthInMeters = uint16[index] * depthInfo.rawValueToMeters;
(Use {{jsxref("Float32Array")}} for a "float32" data format.)
Note that the depth in meters is in depth-buffer coordinates. Additional steps are needed to convert them to normalized view coordinates, or the {{domxref("XRCPUDepthInformation.getDepthInMeters()")}} method can be used.
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