Logarithm Calculator
logᵦ(x) = ln(x) ÷ ln(b).
Inputs and units
- Positive number: Enter your value in the format and unit shown.
- Base (e ≈ 2.718281828): Enter your value in the format and unit shown.
Calculation method
logᵦ(x) = ln(x) ÷ ln(b).
Worked example
The example values are: Positive number = 100; Base (e ≈ 2.718281828) = 10
- Logarithm: 2
Assumptions and limitations
Check that the inputs and units describe your situation.
Using your result
Select Calculate after changing inputs. Copy result copies the displayed output; Download result saves a text file. Reset returns the form to its example inputs. Calculations run in your browser.
Logarithm Calculator FAQs
What method does this calculator use?
logᵦ(x) = ln(x) ÷ ln(b).
What should I check before using the result?
Check that the inputs and units describe your situation.