Covid-19 has given a halt to all the activities in the world. Europe was most affected followed by the United States of America. In this study we have assessed the severity of Covid-19 by analyzing the mortality rate in Covid-19 and other diseases. The Covid-19 data and “death rate” data caused by other diseases (cardiovascular diseases, cancer, non-communicable respiratory diseases, respiratory infectious diseases, diabetes mellitus, and kidney diseases) were downloaded from the world health organization (WHO) website. A normalized period based method was used to see the mortality rate of Covid-19 in comparison to other diseases. The deaths occurred by cardiovascular diseases, cancer, and respiratory diseases were more in number than the Covid-19 caused deaths in the 45 days period where most of the Covid-19 deaths had taken place. The mortality rate of Covid-19 was highest in France followed by Belgium and the lowest in Russia while the share of Covid-19 caused deaths in total deaths by all causes was the highest in Belgium followed by Spain and the lowest in Japan. The severity of Covid-19 in the USA was moderate. The severity of Covid-19 in Asian countries was found to be moderate to low. The severity of Covid-19 was diverse in the world. Europe showed the highest diversity in the mortality rate of Covid-19. Cardiovascular diseases, cancer, and non-communicable diseases were still more lethal and caused more deaths than Covid-19.