Guinea vs Mauritania

Mauritania is 4.19 times larger than Guinea. Guinea would fit into Mauritania about 4.2 times.

GuineaMauritaniaGuinea moved onto Mauritania · Equal-area projection
0.24×
Guinea is 0.24× the area of Mauritania. Put the other way, Mauritania is 4.19× the size of Guinea.
GuineaMauritania
Area245,857 km²1,030,700 km²
Population15,099,7275,315,065
Density61 / km²5.2 / km²
CapitalConakryNouakchott
RegionWestern AfricaWestern Africa
CoastlineHas a coastHas a coast
Neighbours64

Why the map you grew up with disagrees

On a Mercator map, area grows with distance from the equator. Guinea sits at about 10°N and is stretched to 1.03× its true area; Mauritania at 20° N is stretched to 1.14×. Here the two are distorted about the same amount, so Mercator gets this pair roughly right. The figure above uses the Equal Earth projection, where every square kilometre is drawn the same size.

Questions about this pair

Is Guinea bigger than Mauritania?
No. Guinea is 4.19 times smaller than Mauritania. Guinea covers 245,857 km² and Mauritania covers 1,030,700 km².
How many times does Guinea fit into Mauritania?
About 4.2 times: Mauritania has 4.19× the area of Guinea.
Why do Guinea and Mauritania look different on Google Maps?
Web maps use the Mercator projection, which stretches area with distance from the equator. Guinea is drawn about 1.03× its true area there and Mauritania about 1.14×. For this pair the distortion is similar, so Mercator gets the comparison roughly right. Kartavera uses Equal Earth, where every square kilometre is drawn the same size.
Which has more people, Guinea or Mauritania?
Guinea: 15,099,727 people against 5,315,065. Density: Guinea 61 per km², Mauritania 5.2 per km².