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    Log Base 81 of 27

    Logarithm Calculator
    Log base
    x

    What is log₈₁ 27?

    Answer

    log81 27 =
    3/4 = 0.75

    log81 is the log base 81.

    log81 27 is the power you raise 81 to, to get 27: 81y = 27.

    813/4 = (∜81)³ = 3³ = 27 ✓

    Oxy

    Answer point (27, 3/4).

    The curve y = log81 x passes through (1, 0) and (81, 1) and rises: for x > 1 the log is positive, for 0 < x < 1 negative.

    Log of 27 in different bases
    BaseNotationValue
    eln 27≈ 3.2958
    10log 27≈ 1.4314
    2log₂ 27≈ 4.7549
    81log₈₁ 273/4

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    Log Base 81 of 27 (log₈₁ 27). log₈₁ 27 = 3/4 = 0.75: the power you raise 81 to, to get 27. With the check and the graph.
    https://calculat.io/en/number/logarithm/81--27/generated.jpgCopy

    Log base 81 of nearby numbers

    xlog₈₁ x
    273/4
    Recalculate with different values ↑

    FAQ

    What is log₈₁ 27?

    log₈₁ 27 = 3/4 = 0.75

    Why is log₈₁ 27 a fraction?

    Both numbers are powers of 3: 81 = 3⁴ and 27 = 3³, so 27 = 81^(3/4) and log₈₁ 27 = 3/4 = 0.75.

    What does log without a base mean?

    At school and on a calculator, log x without a base is the common log, base 10: log 100 = 2. In Python, math.log(x) is the natural log ln x; in Excel, LN is the natural log and LOG is base 10.

    See Also