Indonesia covers 1,872,242 km² km² on the new Equal Earth world map — 1.4%% of all land on Earth, making it the 15th largest country in the world and the 5th largest in Asia. At 2° latitude Mercator only inflates Indonesia by about 0%%, so the old and new maps largely agree on it — unlike the far north, where Mercator's stretch is dramatic.
For scale: Indonesia is roughly the same size as Sudan (1,863,027 km² km²).
You could fit 3 of Kenya inside Indonesia.