Estonia is approximately 45,228 sq km, while El Salvador is approximately 21,041 sq km, making El Salvador 46.52% the size of Estonia. Meanwhile, the population of Estonia is ~1.2 million people (5.3 million more people live in El Salvador).
This to-scale map shows a size comparison of Estonia compared to El Salvador. For more details, see an in-depth quality of life comparison of El Salvador vs. Estonia using our country comparison tool.