| True area | On the old Mercator map | Distortion vs truth |
| St. Pierre and Miquelon | 207 km² | 443 km² | 2.1× |
| Greenland | 2,154,754 km² | 25,447,645 km² | 11.8× |
| Africa | 30,370,000 km² | — | 1× |
Old maps drew St. Pierre and Miquelon at about 443 km² km². The truth is 207 km² km² — a difference of 114%% that school atlases carried for centuries.