Belt size 48 - measured from the end of the leather wrapped around the buckle to the middle hole... that length is appx. 48 3/4 - 49 1/4".
Belt size 50 - measured from the end of the leather wrapped around the buckle to the middle hole... that length is appx. 50 3/4 - 51 1/4".
Belt size 54 - measured from the end of the leather wrapped around the buckle to the middle hole... that length is appx. 55 - 55 1/2".