Logarithm Calculator
Calculate log10, ln (natural log), log2, and logarithm with any custom base. Shows formulas.
Leave empty to skip custom base
Enter a positive number to see logarithms
Logarithm Calculator
Calculate logarithms in common bases (10, e, 2) and any custom base. Formulas are shown for each result.
Supported Logarithms
- log₁₀ - Common logarithm (base 10)
- ln - Natural logarithm (base e)
- log₂ - Binary logarithm (base 2)
- Custom base - Any positive base (except 1)
FAQ
What is the natural logarithm?
The natural logarithm (ln) uses Euler's number e (approximately 2.71828) as its base. It is fundamental in calculus and many scientific applications.