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According to most reliable sources, Einstein never undertook an intelligence quotient test, so his ranking on the scale will remain forever unknown. The German website linked below explains in greater detail. Estimates place Einstein's IQ well above 140, which entitles him to be considered in the genius category.

There are many aspects of intelligence that traditional IQ testing does not consider and therefore there are many arguments questioning the validity of these tests.

The most accurate thing to say about Albert Einstein's intellect is that it enabled him to contribute a great deal to modern and contemporary science.

An interesting fact about Einstein's brain (which was not cremated along with his corporeal remains but was instead dissected and analysed at his request by Princeton University after his death in 1955) was that it lacked a certain fold in the area of the brain thought to undertake mathematical thinking.

Einstein never took an IQ test. However by present standards, his IQ must have been more than 150, coz

IQ of 160 => intelligence of a genius

140 => excellent intelligence

120 => very good intelligence

110 => fairly good intelligence

90 => average intelligence

65 => very poor intelligence

b/w 160 - 200

his adult IQ was just above 160

160 or above

he's a genius