Natural logarithm calculator
Calculate the natural logarithm ln of positive real numbers with clear domain errors.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Positive number
Result
Natural logarithm
Enter a positive number to calculate
Decimal places: 0 · : 0
What this tool does
- Calculate ln
- Work with exponential models
Example
Input
1
Output
ln(1) = 0
Natural logarithms are defined only for positive numbers.
Frequently asked questions
Can zero be calculated?
No, ln(0) is undefined.
What is ln(1)?
It is zero.
What is the default precision?
Six decimal places.
Keywords：自然对数lnlogarithm