Feedback form
Hi! What do you think?

Drag it here or paste with Ctrl+V

    You can also email us on infocalculat.io

    Natural Log of 40

    Logarithm Calculator
    Log base
    x

    What is ln 40?

    Answer

    ln 40 ≈
    3.6889

    ln is the natural log, base e ≈ 2.71828.

    ≈ — the logarithm is irrational; the value is rounded to 4 decimal places.

    ln 40 is the power you raise e ≈ 2.71828 to, to get 40: ey = 40.

    e³ ≈ 20.0855 < 40 < e⁴ ≈ 54.5982, so 3 < ln 40 < 4

    Oxy

    Answer point ≈ (40, 3.6889).

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

    Log of 40 in different bases
    BaseNotationValue
    eln 40≈ 3.6889
    10log 40≈ 1.6021
    2log₂ 40≈ 5.3219

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/number/logarithm/e--40Copy
    <a href="https://calculat.io/en/number/logarithm/e--40">Natural Log of 40 (ln 40) - Calculatio</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    Natural Log of 40 (ln 40). ln 40 ≈ 3.6889: the power you raise e to, to get 40. With the check and the graph.
    https://calculat.io/en/number/logarithm/e--40/generated.jpgCopy

    Natural log of nearby numbers

    xln x
    20≈ 2.9957
    21≈ 3.0445
    30≈ 3.4012
    40≈ 3.6889
    42≈ 3.7377
    50≈ 3.9120
    60≈ 4.0943
    Recalculate with different values ↑

    FAQ

    What is ln 40?

    ln 40 ≈ 3.6889

    What is the difference between ln 40 and log 40?

    ln 40 is the logarithm to base e, log 40 is to base 10: ln 40 ≈ 3.6889, log 40 ≈ 1.6021. One is the other divided by ln 10: log 40 = ln 40 / ln 10 ≈ 1.6021.

    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