Using the calculator
Enter the values requested above. Calculate logarithms using a custom positive base and compare with natural and base 10 logs.
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Logarithm Calculator
Calculate logarithms using a custom positive base and compare with natural and base 10 logs.
Enter the values for the problem
Enter the numbers, equation values, scores, or dimensions requested by the logarithm tool. Review the supporting outputs to check the result and understand the relationship between the values.
Important: Use the inputs that match your situation. Results are estimates based on the values and assumptions entered.
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How to use this calculator
Reading the result
The result shows the exponent required for the selected base to produce the number entered. Supporting values may also show natural log and base 10 log for comparison.
Results are estimates based on the values entered. Review the Methodology and Calculator Disclaimer for important limitations.