Closer than most people guess: Algeria (2,381,741 km²) is only about 10% larger than Greenland (2,166,086 km²).
Algeria sits in Africa, Greenland in North America. On the old Mercator map the latitude gap distorted how large each felt beside the other; at true size the answer is simply 1.1×.
The old map muddied it further: Mercator inflates Algeria about 1.3× and Greenland about 11.8×, so on a Mercator-style map this pair appears 8.4× apart instead of the true 1.1×.
Greenland fits 1× into Algeria.
Algeria vs Greenland: key figures
| Measure | Algeria | Greenland |
|---|
| True area | 2,381,741 km² · #10 | 2,166,086 km² · #12 |
| Mercator inflation | 1.3× | 11.8× |
| Apparent on Mercator | 3,058,155 km² | 25,576,494 km² |