Belgium vs Slovakia

Slovakia is 60% larger than Belgium. Belgium would fit into Slovakia about 1.6 times.

BelgiumSlovakiaBelgium moved onto Slovakia · Equal-area projection
0.63×
Belgium is 0.63× the area of Slovakia. Put the other way, Slovakia is 1.6× the size of Belgium.
BelgiumSlovakia
Area30,688 km²49,034 km²
Population11,941,7815,413,813
Density389 / km²110 / km²
CapitalBrusselsBratislava
RegionWestern EuropeEastern Europe
CoastlineHas a coastLandlocked
Neighbours45

Why the map you grew up with disagrees

On a Mercator map, area grows with distance from the equator. Belgium sits at about 51°N and is stretched to 2.49× its true area; Slovakia at 49° N is stretched to 2.3×. 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 Belgium bigger than Slovakia?
No. Belgium is 37% smaller than Slovakia. Belgium covers 30,688 km² and Slovakia covers 49,034 km².
How many times does Belgium fit into Slovakia?
About 1.6 times: Slovakia has 1.6× the area of Belgium.
Why do Belgium and Slovakia look different on Google Maps?
Web maps use the Mercator projection, which stretches area with distance from the equator. Belgium is drawn about 2.49× its true area there and Slovakia about 2.3×. 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, Belgium or Slovakia?
Belgium: 11,941,781 people against 5,413,813. Density: Belgium 389 per km², Slovakia 110 per km².