Math & Trig
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=LN()
Returns the natural logarithm of a number. Natural logarithms are based on the constant e (2.71828182845904).
Applies To:
Excel for Microsoft 365Excel for Microsoft 365 for MacExcel 2024Excel 2024 for MacExcel 2021Excel 2021 for MacExcel 2019Excel 2016
=LN(number)
Hover argument names in the table for details.
Output typeNumber
Popularity15 / 100
VolatileNo
Dynamic ArrayNo
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◧ Arguments
| Argument | Type | Required | Description |
|---|---|---|---|
number |
Number | Required | The positive real number for which you want the natural logarithm. |
▣ Examples
Natural logarithm of 86
=LN(86)
Result:
4.4543473
Natural logarithm of the value of the constant e
=LN(2.7182818)
Result:
1
Natural logarithm of e raised to the power of 3
=LN(EXP(3))
Result:
3
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