The logarithm of a value of an arbitrary base can
be calculated, as well as all inverse calculations.
Formula: , that means also
The logarithm of the number a in base b is the exponent x such that a = bx
|log 2||=||lg, sometimes ld|
|log e||=||ln or log|
|log 10||=||lg, sometimes log|
|log10 x||=||lg x|
|loge x||=||ln x|
|log2 x||=||lb x|
Please enter two values, the third will be calculated.
The natural logarithm ln is, when the base b = e. Euler's number e = 2.718281828459...
What is the logarithm of 4? Answer 0.60206 (exponent). Base b = 10. log 4 = 0.60206
What number the has exponent x = 0.81292? Answer 6.5 (number). Base b = 10. 100.81292 = 6.5