Logarithm Calculator
Calculate logarithm to any base or natural log (base e).
Select type, enter value(s) to calculate.
FAQ
- What bases can I use?
- Natural log (base e), common log (base 10), binary log (base 2), or any custom base you enter.
- What is the difference between log and ln?
- log usually refers to log₁₀; ln is the natural logarithm (base e ≈ 2.718). Use our dropdown to select.