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Excel inverse log function?

This is a discussion on Excel inverse log function? within the Excel Questions forums, part of the Question Forums category; Does anyone know if there is an inverse log function in Excel? I found a LOGINV function but it asked ...

  1. #1
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    Does anyone know if there is an inverse log function in Excel? I found a LOGINV function but it asked for parameters I'm not familiar with. I'm using a dB loss equation "dB = Log(Pout/Pin)*10" rearranged to calculate expected output power given the nominal dB loss and input power so I need to compute inverse log in the process. Thanks for any help on this.

    Jeff

  2. #2
    MrExcel MVP Jay Petrulis's Avatar
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    Hi Jeff,

    Use
    =EXP(exponent)
    to take the inverse of the natural logarithm.

    Use
    10^(exponent)
    or =POWER(10,exponent) to take the inverse base10 logarithm/

    HTH,
    Jay

  3. #3
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    Thanks, Jay. It works great.

    Jeff

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