Step-by-step instructions
- Enter or select Number.
- Enter or select Base.
- Tap Calculate.
- Review the result shown directly below the calculator.
Logarithm Calculator
Calculate logarithm of a number for any positive base.
How to use the Logarithm Calculator
Calculate logarithm of a number for any positive base.
What the inputs mean
- Number
- Enter the value requested by this field label.
- Base
- Enter the value requested by this field label.
Formula or calculation method
The calculator applies the standard mathematical relationship for the labeled inputs and returns the computed result automatically.
Example
Try entering realistic values for Number and Base, then tap Calculate to see how the result changes.
How to understand the result
Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.
Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.