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 Microsoft Excel > Functions > Maths and Trigonometry > LOG10
 

LOG10(number)

 
 Returns the logarithm of a number to the base 10.

 numberThe number you want the base-10 logarithm of.

 REMARKS
 
  		• If "number" < 0, then #NUM! is returned.
     
  		• If "number" is not an integer, it is truncated.
     
  		• If "number" is not numeric, then #VALUE! is returned.

     EXAMPLES
     
     A
    1=LOG10(86) = 1.934
    2=LOG10(10) = 1
    3=LOG10(100000) = 5
    4=LOG10(10*10) = 2
    5=LOG10(10^5) = 5
    6=LOG10(10.9) = 1
    7=LOG10(-10) = #NUM!
    8=LOG10("some text") = #VALUE!
    		 
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