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# VBScript Log Function * * Complete VBScript Reference Manual](#) * * * The Log function returns the natural logarithm of a specified number. The natural logarithm is the logarithm to the base e. **Note:** Negative values are not allowed. **Tip:** See the Exp function. ### Syntax Log(number) | Parameter | Description | | :--- | :--- | | number | Required. A valid numeric expression greater than 0. | ## Example ## Example document.write(Log(38.256783227)) The above example output: 3.64432088381777 [Try it Yourself »](#) * * Complete VBScript Reference Manual](#)