Guinea vs Nigeria

Nigeria is 3.76 times larger than Guinea. Guinea would fit into Nigeria about 3.8 times.

GuineaNigeriaGuinea moved onto Nigeria · Equal-area projection
0.27×
Guinea is 0.27× the area of Nigeria. Put the other way, Nigeria is 3.76× the size of Guinea.
GuineaNigeria
Area245,857 km²923,768 km²
Population15,099,727237,527,782
Density61 / km²257 / km²
CapitalConakryAbuja
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; Nigeria at 10° N is stretched to 1.03×. 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 Nigeria?
No. Guinea is 3.76 times smaller than Nigeria. Guinea covers 245,857 km² and Nigeria covers 923,768 km².
How many times does Guinea fit into Nigeria?
About 3.8 times: Nigeria has 3.76× the area of Guinea.
Why do Guinea and Nigeria 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 Nigeria about 1.03×. 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 Nigeria?
Nigeria: 237,527,782 people against 15,099,727. Density: Guinea 61 per km², Nigeria 257 per km².