About this log calculator
log_b(x) answers “b to what power is x?”: log₁₀(1000) = 3 because 10³ = 1000. Any base follows from natural logs, log_b(x) = ln x ÷ ln b, which is how this calculator works.
log
Log Calculator
Details
How to use Log Calculator
What the tool does, how to run it, and what to expect from the result.
At a glance
Who Log Calculator is for
A quick way to understand who this helps, what it solves, and where it connects next.
Best fit
Students, teachers and anyone checking a calculation.
Ideal for
Using the log calculator without installing anything or signing up.
FAQ
Common questions
Short answers for the questions people usually have before trying a utility like this.
What is the difference between log and ln?
log usually means base 10; ln is the natural log, base e ≈ 2.71828.
How do I change the base of a logarithm?
log_b(x) = log(x) ÷ log(b) in any common base. log₂(1000) = 3 ÷ 0.30103 ≈ 9.966.
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