Poland covers 312,566 km² km² on the new Equal Earth world map — 0.2%% of all land on Earth, making it the 70th largest country in the world and the 9th largest in Europe. At 52° latitude the old Mercator map inflates area by about 2.7×, so it drew Poland closer to 828,300 km² km² — a difference of roughly 165%%.
For scale: Poland is roughly the same size as Oman (312,041 km² km²).
You could fit 3 of Iceland inside Poland.