XT2 19mm - Info needed for GSD calculation

We have an XT2 19mm 640x512. Is my information below correct?

 

58.82mm = the sensor width of the camera (millimeters)

19mm = the focal length of the camera (millimeters)

640 = the image width (pixels)

520 = the image height (pixels)

 

It doesnt seem to make sense in the GSD calculator? Trying to determine the height needed to fly in order to obtain a GSD of 7.0cm/px?

Ivan

58.82mm = the sensor width of the camera (millimeters)

19mm = the focal length of the camera (millimeters)

640 = the image width (pixels)

520 = the image height (pixels)

This data is correct.