Hello, I've seen in a bunch of datasheets a spectral noise density figure, expressed in Units/sqrt(Hz).

In my case, I'm trying to assess the measurement error in an accelerometer, where noise is expressed in micro-g/sqrt(Hz). I was wondering how to convert from noise density to standard deviation in measurement values. I do remember hearing about flicker noise in RF classes, I have a feeling it should be a similar process as to getting the phase noise of an oscillator.

Any ideas?