Ethiopia covers 1,131,761 km² km² on the new Equal Earth world map — 0.8%% of all land on Earth, making it the 27th largest country in the world and the 10th largest in Africa. At 9° latitude Mercator only inflates Ethiopia by about 2%%, so the old and new maps largely agree on it — unlike the far north, where Mercator's stretch is dramatic.
For scale: Ethiopia is roughly the same size as Colombia (1,139,434 km² km²).
You could fit 3 of Japan inside Ethiopia.