I’ve found an online application that will take your ADIF logging file and map out the grids on a Google Map. You can see the result of my six meter logbook below.
It is at WG7J GridMapper online. It works really nicely. I had been trying to plot out my worked grids on a printed map and by about the 50th grid get confused or off track. This takes care of all that for you. Plus, click on a grid square to see who you’ve worked.