About This Tool. The online Log Calculator is used to calculate the logarithm log b x for a base b and a number x. Logarithm. The logarithm of a number x with. Tool for calculating logarithms. The logarithm function is denoted log or ln and is defined by a base (the base e for the natural logarithm). Logarithm calculator online. Calculate logarithm of a number to any base. Logarithm to a given base: SetValue "This calculator outputs logarithm of a number to a given base, as well as natural and common decadic logarithms" ;this. We've sent the email to: I agree to the terms and conditions Create my account. Financial Weight Loss Math Pregnancy Other. Math common logarithm decadic logarithm logarithm natural logarithm. The anti logarithm or inverse logarithm is calculated by raising the base b to the logarithm y:. Logarithms do not exist for zero or negative numbers, because you cannot raise 10 to any power such that the result will be zero or a negative number. Binary to Decimal, Hexa, Octal Converter. This logarithm is used primarily for computer calculations. Logarithm function Logarithm function chart Exponential function Exponential function chart Square and n-th root Square and n-th root chart Power Factorial Factorial chart. Math common logarithm decadic logarithm logarithm natural logarithm. As you probably know, this is the same as saying 6 3.