Logarithm, Natural Logarithm, and Base 2 or any base Logarithm

HOW TO USE:
Click or touch the input box. Then enter new number in any input boxes shown below. Answer will be automatic
Do not enter comma symbol , because NaN ( Not a Number error )

Log ₁₀ =

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Natural Logarithm (e = 2.718)
Ln _e =

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Any base Logarithm
Log ( )
=