About 150,000.
About the same number of japanse civilans died in the invasion of the small island of Okinawa earlier that year. In the same battle some 120,000 japanese soldiers were killed. They took over 12,000 americans wioth them and wounded 36,000.
I'm guessing you are a racist who hates Japanese and wishes dearly that a land invasion cuold take place so that vastly more of them could have died from gonshots, stabs, slow burning, suffocations, shrapnel, buried in caves, bombs, crushed by tanks instead of a very small number by nuclear bombs the great majority of whom died instatly and painlessly. But I could be wrong?
Perhaps you would argue that Japan be blocaded until surrender? Yes I love the idea of starving civilan people (old men women and choildren) for years on end while the military gets all the rations to sustain the war aeffort!!!!
Or better yet, why not wait for the russians to invade Japan. Not only could those fine young japanese women experience filthy russian rape they could then enjoy 50 years of wonderous soviet rule and prosparity like east germany and east europe.
Or we could just let more americvans keep dieng and blow one up on island while Japanese military laugh at us and sees it as sign of weakness continuing the war with greater vigor
Oh yes, those are all so nice and what the USA did was so evil...
Those were the alternatives....