University of Portsmouth calculates final degree classification in three ways, and has recently added the Grade Point Average (GPA) to graduate's transcripts. This app indicates how module marks can combine to form a final degree classification, it also calculates an incicative GPA.
If you're a student, it may be interesting to see how your current/predicted grades might affect your final classification. Remember too, that it's not all about the grades - they may show capability, but they can never reflect who you are or how well you'll fit & contribute to any team.
Try it now (http://soc.port.ac.uk/dcalc/)
Please add suggestions & bug reports to the issue list.