Sri Lanka vs Vietnam

Vietnam is 5.06 times larger than Sri Lanka. Sri Lanka would fit into Vietnam about 5.1 times.

Sri LankaVietnamSri Lanka moved onto Vietnam · Equal-area projection
0.2×
Sri Lanka is 0.2× the area of Vietnam. Put the other way, Vietnam is 5.06× the size of Sri Lanka.
Sri LankaVietnam
Area65,610 km²331,690 km²
Population21,756,000101,598,527
Density332 / km²306 / km²
CapitalColomboHanoi
RegionSouthern AsiaSouth-Eastern Asia
CoastlineHas a coastHas a coast
Neighbours03

Why the map you grew up with disagrees

On a Mercator map, area grows with distance from the equator. Sri Lanka sits at about 8°N and is stretched to 1.02× its true area; Vietnam at 17° N is stretched to 1.09×. 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 Sri Lanka bigger than Vietnam?
No. Sri Lanka is 5.06 times smaller than Vietnam. Sri Lanka covers 65,610 km² and Vietnam covers 331,690 km².
How many times does Sri Lanka fit into Vietnam?
About 5.1 times: Vietnam has 5.06× the area of Sri Lanka.
Why do Sri Lanka and Vietnam look different on Google Maps?
Web maps use the Mercator projection, which stretches area with distance from the equator. Sri Lanka is drawn about 1.02× its true area there and Vietnam about 1.09×. 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, Sri Lanka or Vietnam?
Vietnam: 101,598,527 people against 21,756,000. Density: Sri Lanka 332 per km², Vietnam 306 per km².